What is the function of DNA and where is it found in a eukaryote cell?

A) sexual reproduction:ribosomes
B) controls respiration:mitochondria
C) regulates all cell activity:nucleus
D) pass of like traits:endoplasmic reticulum

Answer:

D. climax communities

Explanation:

The climax communities are the communities that have reached equilibrium. This basically means that there's the optimal number of species of flora and fauna, as well as the optimal populations of them in the ecosystem. They all interact and are perfectly adapted to coexist, benefit from one another, and balance the usage of food sources with its renewing. This type of communities appear at places where there has been no disturbances for quite some time, so the species lving there managed to create a perfect balance.

In order: osmosis, higher, lower

Osmosis higher lower

Hydrogen bonds are the connections made by water molecules. When water cools to 3.98 °C, its volume falls, but its mass remains constant, making it more compact since the same mass can fit into a smaller area.

What is the density of water at different temperature?

Salinity and temperature have an impact on water density. The unit of density is mass (g) per cubic millimeter (cm3).

Water is least dense at 0 °C and most dense at 3.98 °C (freezing point). Salinity and temperature both affect water's density.

When water is cooled to a temperature of about 4 degrees Celsius, it begins to constrict as one would expect.

It then gradually grows until it reaches the freezing point, at which point it freezes and expands by around 9%.

Therefore, the density of water at 3.98 degrees Celsius is 1.00000 g/ml.

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It's B

That's the only one up there with both.

Eukaryotic cells contain a nucleus and membrane-bound organelles.  

Option B

Explanation:  

Eukaryotic cells consists of membrane bound organelle, when we talk about organelle it is a structure within a living cell which is specialized. The organelles consist of nucleus, ''endoplasmic reticulum'', ''Golgi apparatus'', ''vacuoles'', ''lysosomes'', ''Mitochondria''. These organelles is surrounded by a phospholipid bilayer. With this foundation, the organelles have cell to control what enters and leaves it. These cells are controlled by selective permeability which has the enter and exit in control of any object.

Answer:

Salt would increase the weathering

Explanation:

Answer:

A

Explanation:

Answer:B

Explanation:

Answer:A nucleotide

Explanation:

Apex:)

Methane is a greenhouse gas released into the atmosphere through both natural processes and human activities. Large amounts of methane contribute to global warming by trapping heat in the atmosphere, which increases the Earth's temperature. This process is part of a positive feedback loop that accelerates global warming.

Methane is a greenhouse gas. When large amounts of methane are released into the atmosphere, it contributes to global warming. It does this by trapping heat in the atmosphere, impeding its flow back to space, and maintaining an energy balance that increases the temperature of the surface and lower atmosphere. This is because the more methane there is in our atmosphere, the higher the temperature at which Earth's surface reaches a new balance.

Methane is produced in several ways, both natural and human-influenced. Anaerobic bacteria break down organic matter to produce methane, in environments like underwater organic matter in rice paddies or the intestines of herbivores. Methane is also released from natural gas fields and during the decomposition of animal and plant material that occurs in landfills. Another significant source of methane is the melting of clathrates, which are frozen chunks of ice and methane found at the bottom of the ocean. As the ocean's water temperature increases, these clathrates melt at an increased rate, releasing even more methane into the atmosphere.

Although the main component of the carbon cycle is carbon dioxide, methane plays a significant role. Human activities, such as burning fossil fuels, deforestation, cement manufacture, and animal agriculture, release these gases into the atmosphere, contributing to global warming. This effect is characterized by a positive feedback loop, which ultimately accelerates the rate of increase in global temperatures.

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Methane (CH4) is a potent greenhouse gas that contributes to global warming due to its strong greenhouse effect. It is created from the decomposition of organic matter and human activities, and it leads to the production of other greenhouse gases as it decomposes in the atmosphere.

Methane's release into the atmosphere contributes significantly to global warming. Its greenhouse effect is over 20 times stronger than that of carbon dioxide when considering its potency per molecule. Furthermore, when methane decomposes in the atmosphere, which happens over approximately 12 years, it turns into carbon dioxide, thus remaining and contributing to warming for a much longer period. Other consequences of methane release include the production of ozone, another potent greenhouse gas, and water vapor, both of which are produced through chemical reactions involving methane in the upper atmosphere. Due to human activities such as agriculture, fossil fuel extraction, and transport, methane is now more abundant in the Earth's atmosphere than at any time in the past 650,000 years. Its levels have increased sharply during most of the 20th century and are more than two-and-a-half times the pre-industrial levels. While the rate of methane increase has slowed in recent decades, it still remains a critical contributor to climate change and effective methane mitigation efforts are vital for environmental protection.

I think its 3)in orbit around the sun

i hope i helped even just a little :)

3) in orbit around the sun.

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Answer:

B:A camp fire

Explanation:

because camp fire have carbon and hydrogen that release huge amount of thermal energy

To determine which of the given options has the most thermal energy, we need to consider the factors contributing to the thermal energy of each item.

A) The Ocean:

The ocean is a vast body of water covering a significant portion of the Earth's surface. While it contains a massive amount of water, water has a relatively high specific heat capacity, meaning it can absorb and retain heat energy well. However, the ocean's temperature varies widely depending on location, depth, and time of year. In general, the ocean may contain a large amount of thermal energy due to its sheer volume and the energy it absorbs from the sun, but it is distributed over a vast area.

B) A Campfire:

A campfire typically generates a significant amount of thermal energy. It results from the combustion of wood or other fuel, releasing heat energy in the form of flames and radiant heat. Campfires can reach high temperatures, especially when fueled adequately, and they produce intense heat in a localized area. However, their thermal energy is limited to the amount of fuel available and the efficiency of combustion.

C) A Hot Oven:

A hot oven is designed to reach and maintain high temperatures for cooking food. Ovens can be heated to several hundred degrees Fahrenheit or more, depending on the settings. They contain heating elements or gas burners that generate heat, which is then transferred to the enclosed space inside the oven. Ovens can store a significant amount of thermal energy due to their insulation and ability to maintain high temperatures over extended periods.

D) A Hot Water Bottle:

A hot water bottle contains water heated to a desired temperature and sealed within a container, typically made of rubber or similar materials. Water has a relatively high specific heat capacity, meaning it can store a considerable amount of thermal energy. A hot water bottle can retain heat for an extended period, gradually releasing it to its surroundings.

Considering these factors, the item with the most thermal energy would likely be option C) A hot oven. Ovens are designed to reach high temperatures and can store a significant amount of thermal energy due to their insulation and ability to maintain heat over time. While a campfire may produce intense heat, its thermal energy is limited by the amount of fuel available. The ocean contains vast amounts of water, but its thermal energy is distributed over a vast area and can vary widely.

A hot water bottle can retain heat well, but its thermal energy is limited by the volume of water it contains and its initial temperature. Therefore, the hot oven is likely to have the most thermal energy among the options provided.

short term climate change has more to do with precipitation,& the clash of warm and cool air mixing 2gether..

Answer:

an increase of hurricanes and volcanic eruptions.

Explanation:

Answer:

The volcanic activity led to the release of large amounts of carbon dioxide at the end of the Devonian period

Explanation:

Devonian period is refereed as the Age of fish. It is also called an era of mass Extinction. During the end of Devonian period most of the terrestrial animals were extinct from Earth. Another big feature of Devonian period was massive volcanic activity which contributed to the release of carbon dioxide in the environment.    

Answer: the rock is felsic because it has light colored minerals

Explanation:

Answer:A :Felsic

Explanation:it can vary from pink color to dark grey color but Felsic type is more pinkish or lighter in shade

Felsic rocks are basically rich in elements that form feldspar and quartz ,in contrast to other rocks they are rich in magnesium and iron

Answer:B, tectonic plates

Explanation:

Hello Friend, I don't think so that it is a worm or a slug. This more looks like a larvae of an insect. I am pretty sure that is is Black Soldier Fly Larvae.

If you search up "Black Soldier Fly Larvae" you would see lots of information about them. Or you can just search up "Black larvae" and see which image matches to yours the best.

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1) Variation: there needs to be a difference in the individuals within a population

2) Inheritance: These variable traits must be able to be passed down genetically

3) Growth rate: There needs to be a growth rate that requires a struggle for resources

4) Survival rate: There needs to be a difference in survival rate for the different variation types... certain variations will live

The four principles of natural selection are variation, inheritance, high rate of population growth, and differential survival and reproduction. This means members of a species are variable, part of this variation is inheritable, populations produce more offspring than can survive, and those with better survival traits are more likely to pass them on.

The four principles of natural selection are: variation, inheritance, high rate of population growth, and differential survival and reproduction.

The principal of variation means individuals within species are variable. Inheritance means that some of these variations are passed on to offspring. High rate of population growth means that populations produce more offspring than can survive, leading to competition. Lastly, differential survival and reproduction states that individuals with advantageous traits are more likely survive and reproduce than those without these traits.

Combined, these principles drive the process of natural selection, causing species to adapt to their environments over time. In any given environment, the individuals with traits best suited to that environment will have the greatest chances of surviving and passing those traits on to the next generation.

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Answer:

Blue Jay

Kingdom: Animalia

Phylum: Chordata

Class: Aves

Order: Passeriformes

Family: Corvidae

Genus: Cyanocitta

Species: C. cristata

Robin

Kingdom: Animalia

Phylum: Chordata

Class: Aves

Order: Passeriformes

Family: Turdidae

Genus: Turdus

Species: T. migratorius

Cardinal

Kingdom: Animalia

Phylum: Chordata

Class: Aves

Order: Passeriformes

Suborder: Passeri

Family: Cardinalidae

Finch

Kingdom: Animalia

Phylum: Chordata

Class: Reptilia

Class: Aves

Order: Passeriformes

Superfamily: Passeroidea

Family: Fringillidae

Pelican

Kingdom: Animalia

Phylum: Chordata

Class: Aves

Order: Pelecaniformes

Family: Pelecanidae

Genus: Pelecanus

Explanation:

I put it into the graph they want, and I got a 100%. (If your in FLVS like me, try to re-word it or put it in a different setting.)

The two groups of animals listed below for your project are as follow:

1. Blue Jay

2. Robin

3. Cardinal

4. Finch

Kingdom, phylum, class, order, family, genus, and species are the classification levels in order.

Thus, this the answer.

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Answer: She will need to learn out how to quantitatively measure mold growth to measure the dependent variable.- last choices

Answer:

She will need to learn out how to quantitatively measure mold growth to measure the dependent variable.

Explanation:

In any experiment there are two types of variables, dependent and independent. Independent variable is controlled by the experimenter and its value is not affected by the experiment. Dependent variable's value depends on the independent variable and is affected by the experiment.

Here, the experiment is trying to find out the way mold growth is affected by the type of bread. Hence the type of bread is the independent variable and the mold growth is dependent variable. To measure the dependent variable correctly the researcher will have to learn to quantitatively measure the mold growth. Quantitative analysis of mold growth will give an accurate measurement of dependent variable.  

Final answer:

Scientists employ pedigree charts to study the inheritance pattern of genetic diseases within families, identifying carriers and predicting the risk of passing these disorders to offspring.

Explanation:

Geneticists use pedigree analysis to trace hereditary diseases through a family's history. By creating a pedigree chart, which visually represents the inheritance of traits across generations using standardized symbols for sexes and relationships, scientists can deduce the pattern of inheritance for genetic disorders. Circles represent females and squares represent males, while horizontal lines indicate matings and vertical lines connect parents to their offspring. These charts help in identifying carriers of recessive genetic diseases and predicting the risk of passing these genes to offspring, thereby aiding in genetic counseling and advancing medical knowledge about hereditary conditions.

Answer:

First answer:  a transform boundary causes excessive amounts of friction between two tectonic plates.

2nd answer - a tsunami

Explanation:  This boundary is often associated with earthquakes because the plates rub against each other, causing friction.

tsunami is a large tidle wave.

"The correct options are c. A transform boundary causes excessive amounts of friction between two tectonic plates and b. a tsunami.

Earthquakes are often associated with the movement of tectonic plates. When two plates slide past each other horizontally along a transform boundary, they can become stuck while the rest of the Earth continues to move. This causes a buildup of stress, and when the plates finally overcome the friction and move, the result is an earthquake. This process is best described by option c. A transform boundary causes excessive amounts of friction between two tectonic plates.

When an underwater earthquake occurs, it can displace a large volume of water, creating a series of waves known as a tsunami. These waves can travel across oceans at high speeds and grow in height as they approach shallower coastal waters, leading to devastating effects on land. The term for such a sea wave is a tsunami, which is option b. a tsunami.

To summarize, the correct answers are:

- Earthquakes sometimes occur when a transform boundary causes excessive amounts of friction between two tectonic plates.

- A sea wave caused by an underwater earthquake is called a tsunami."

Decomposers are crucial to ecosystems as they break down dead matter, recycle nutrients, and help maintain ecological balance by making those nutrients available for uptake by producers.

The importance of decomposers in an ecosystem can be described in several ways, but one primary function is that decomposers break down dead plant and animal matter. This process is crucial because it recycles essential nutrients like carbon and nitrogen back into the ecosystem. Such recycling of nutrients ensures that producers, like plants, have access to the necessary elements to grow and maintain the health of the ecosystem. Without decomposers, dead organic matter would accumulate, and the nutrients contained within would not be available to living organisms, disrupting the balance of the ecosystem.

Decomposers, like bacteria and fungi, play a critical role in stabilizing ecosystems by breaking down waste and dead organisms into simpler inorganic molecules. These molecules are then available for producers to use in creating new organic compounds, thus enabling a continuous flow of energy and matter throughout the food web.

Decomposers break down dead organisms and waste, recycling nutrients like carbon and nitrogen back into the ecosystem, making them available for producers and contributing to the ecosystem's stability and health.

Decomposers play a crucial role in the stability and health of ecosystems. They have the important task of breaking down dead plant and animal matter and recycling essential nutrients back into the ecosystem. Decomposers like bacteria and fungi act on dead organic matter, releasing carbon, nitrogen, and other nutrients which are then available for uptake by plants (producers). This process ensures that nutrients are not locked within dead organisms but are instead reintegrated into the food web.

The actions of decomposers serve to improve soil quality by enriching it with nutrients that are essential for plant growth. The breakdown of organic matter and waste products by bacteria and fungi provides energy for the decomposers themselves and also for the ecosystem as a whole by releasing inorganic molecules that producers can use to make new organic compounds. Consequently, the presence of decomposers is essential for the survival of an ecosystem as they prevent the accumulation of wastes and dead organisms and ensure sufficient nutrients for producers.

I would say C., an emerging disease.

Answer:

(C). an emerging disease.

Explanation:

Emerging disease can be defined as a disease, which has recently infected people of a population or disease whose geographic range or incidences are rapidly increasing in the near future.  

Previously, Lyme disease was geographically restricted to to the north-east United States, but now it is spreading significantly to the other regions. This makes it an example of an emerging disease.

Thus, the correct answer is option (C).

Answer:

an increase in skin cancer can be traced to a decrease in atmospheric ozone.

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Answer: Ozone

Explanation: There is a increase in chance of cancer now a days as compared to earlier time because of ozone depletion.

Due to various types of human activities there are many holes in the ozone due to which harmful ultraviolet rays is entering on earth and there is an increase in the chances o skin cancer.

So, the correct answer is ozone

Answer:

Option B, Most communities never become completely stable

Explanation:

In an ecological succession, most of the species are unstable and they keep on changing continuously. The succession is primarily of two types –  

a) Primary Succession – In this, community of species occur on a new habitat which had been never occupied earlier. Or it can be said that it is entirely a new habitat.

b) Secondary Succession – In this, community of species occur in a habitat where earlier life existed but it was disturbed or damaged by some environmental condition.  

Hence , the correct answer is option B

Brown Middle School's journey to becoming a "green school" focuses on education around sustainability, encouraging practices like reducing, reusing, recycling, and the use of eco-friendly materials. It necessitates a collaborative effort from all school stakeholders to teach and implement the principles of sustainability effectively.

How to Foster Environmental Sustainability in Schools

Brown Middle School's initiative to become a "green school" is an admirable effort that aligns with the broader goal of promoting sustainability and responsible resource usage. The focus on reducing the use of non-renewable resources can span various actions and policies, encouraging a more sustainable environment within the educational setting.

One approach is to integrate education on sustainability across the curriculum. This includes lessons on the importance of water conservation, the benefits of recycling, and the principles of reducing consumption. Reducing, reusing, and recycling are key components of this initiative, emphasizing not only the practical aspects of sustainability but also its ethical and environmental imperatives.

Another significant action is to implement policies that reduce plastic consumption and waste, encouraging the use of eco-friendly materials. Proposals could include the adoption of eco-friendly school supplies and the installation of recycling and composting facilities within the school premises.

Additionally, the school community can engage in civic actions such as writing proposals to local government officials, advocating for environmentally friendly laws and policies.

In essence, Brown Middle School's endeavor to become a green institution is a multidimensional effort that requires the collaboration of students, faculty, and the wider community. By promoting practices such as water conservation, recycling, and the use of sustainable materials, the school can significantly contribute to the broader sustainability movement.

Final answer:

The question pertains to how Brown Middle School is engaging its community to become a 'green school' by reducing non-renewable resource usage and integrating sustainability into the curriculum.

Explanation:

Did you know that green schools can lead to fewer health problems for students and teachers? Research suggests that more natural daylight in schools not only boosts academic performance but also helps to reduce attention and concentration challenges. This staggering information is driving many educational institutions, from grade schools to colleges, towards the adoption of green initiatives.

Today, we observe a significant green movement within the education sector. Individuals in education are increasingly applying efforts to conserve energy and natural resources, prompted by various sustainability-oriented educational resources provided by organizations such as the US Green Building Council's Center for Green Schools. Some of these resources are freely available online, such as the Sustainability Education Clearinghouse, which aids K-12 educators in sharing lesson plans focused on sustainability.

The shift towards greener facilities isn't limited to conservation. Many schools are integrating more green spaces which, according to studies, play a pivotal role in enhancing cognitive skills in children. The need to foster an environmentally conscious generation is reflected both in the physical architecture of schools and in the emerging curriculum, which aims to educate students on the importance of sustainability.

Answer: Option (C)

Explanation: According to the law of Uniformitarianism, the geological processes that has been taking place now must have taken place in the past, and will also take place in future, at a constant speed, in long term.

Darwin suggested that the same Uniformitarianism process takes place in case of living beings also. According to him, these living creatures undergoes evolution and in this process, gradual changes in the organisms occurs being a long-term continuous process.

Thus the correct answer is option (C).

Answer: Option C

Explanation:

Uniformitarianism, states that  the geological processes that take place today would have taken place in the past and it will continue in future as well.

Darwin suggested that the the evolution takes place over a period of time. It takes time to change and this change takes time.

Both the laws states the same thing, that the geological processes and the process of evolution takes place over a period of time and does not takes place rapidly.

A quasar is formed when a super massive black hole has enough material around it to fall in it's accretion disk.

Explanation:

A quasars is made by a super large black hole sucking in a considerable amount of matter in an acceleration disk.

Answer:

C

Explanation:

Producers require solar energy to start photosynthesis to create the glucose they need, so lower solar energy means less photosynthesis.

Answer: C. Producer populations will decrease, causing a decrease in consumer populations.

Explanation:

According to the situation, the volcanic ash will mask the light energy from sun. The sunlight is the main requirement for the producers to synthesize their own food by the process of photosynthesis. The population of plants and other autotrophs will be affected by this. The other organisms in the ecosystem will be affected as decline in the population of producers will result in decline in the population of consumers due to lack of food.  

Answer: C)Gold production was last recorded in Virginia in 1947

Explanation: Look at the graph.

Hello There!

The Net Force Is 4

First, let's remember that you find the "Net Force" of an object by the direction its going. In this case, they are both pointing in different directions.

Next, we find the "Net Force" by subtracting them and the one with the biggest force, you go in that direction.

Finally, once we subtracted 5 from 9 we get a "Net Force" of 4

Final answer:

The resultant force acting on the crate is 3 N to the right, calculated by subtracting the leftward force from the rightward force (5 N - 2 N = 3 N).

Explanation:

To calculate the net force acting on an object when multiple forces are applied, we use vector addition where each force is represented by an arrow pointing in the direction of the force. The length of the arrow is proportional to the magnitude of the force.

For this problem:

By adding these values, we can find the resultant force:

Resultant force = 5 N - 2 N = 3 N to the right.

The resultant force, therefore, acts to the right with a magnitude of 3 N. This is the algebraic sum of the two forces.

Answer : The correct option is, (D) an covalent bond between the atoms.

Explanation :

Ionic compound : These are the compounds where the atoms are bonded through ionic bond.  

Ionic bonds are formed by the complete transfer of electrons. The atom which looses the electron is considered as electropositive atom and the atom which gains the electron is considered as electronegative atom.

The ionic bonds are formed between one metal and one non-metal atoms.

Covalent compound : These are the compounds where the atoms are bonded through covalent bond.  

Covalent bonds are formed by the equal sharing of electrons. These bonds are commonly formed between two non-metal atoms.

In this given picture, the two electrons are equally shared between the two atoms. That means they form covalent bond between the two atoms.

Hence, the (D) an covalent bond between the atoms.