Answer: Electrons flow because of electrical attraction and repulsion.
Explanation:
-Electrons build up in the wire and create a charge. This is false, electrons do not "build up" like water would in a pipe.
-Protons are pushed along by electric forces. This is false, protons do not generate elecricity.
-Electrons flow because of electrical attraction and repulsion. This is true. Electrons flow by attracting and repulsing other electrons.
-Atoms move because of heat. This is partially true, but does not explain how electric current moves in a wire.
Answer:C. Electrons flow because of electrical attraction and repulsion.
hope this helps :)
Explanation:
In the pyramid, only about 10 percent of the __________ is available within one trophic level is transferred to organisms at the next trophic level. A) energy B) heat C) mass D) matter
Answer:A) Energy
Explanation:
I just took the test on USA test prep❤️
Answer:
Energy
Explanation:
Only 10 percent of the energy available within one trophic level is passed to the next higher level in an ecosystem. This is why it takes so much more of the lower level to feed the upper levels.
What happens after long periods of natural selection
Answer:
Evolution
Explanation:
A Farmer wants to grow soybeans that are resistant to insects He decides to plant genetically engineered soybean seeds What is a genetically engineered seed
1.one that has not undergone genetic changes
2.One that has been created by artificial selection
3.One that has genes modified by direct manipulation
4. One that has been gown in a specially developed soil
Help me please!!!!!!
Answer:
proteins and carbohydrates
Explanation:
i just know
At which type of boundary does tension often occur?
Answer:B) divergent
Explaination: Tension is a type of stress that occurs where plates move apart. Rocks stretch apart. Stretching causes rocks to become thin in the middle. Tension often occurs at divergent boundaries
A large body of air with the same temperature and amounts of moisture: *
A) storm
B) front
C) low-pressure system
D) air mass
Answer:
D. air mass
hope this helps
Begin by making a list of questions that will help you conduct research on the topic. To get you started, here are some questions that may lead you to a better understanding of the topic: How does artificial selection differ from natural selection? How did modern dogs evolve? Who are their ancestors? What is a dog breed? What is a pedigree? What methods are used to breed dogs? Are there any ethical issues with these methods? What are the benefits and consequences of dog breeding? What are bulldogs like? What traits does the English bulldog have? Are bulldogs more healthy or less healthy than other breeds? What is genetic diversity? What is the current genetic diversity of the English bulldog? How does the genetic diversity of the English bulldog relate to the breed’s future viability? Now write down four more questions about bulldogs that will help you strengthen your arguments in your research paper.
The answers to these questions are the following:
Artificial selection is different to natural selection because humans control this selection
Modern dogs evolve by artificial selection.
Their ancestors are the wolves.
Dog breed is the genetic cross between dogs.
Pedigree is a diagram that shows the family tree.
Dogs are crossed depending on their physical and cognitive traits.
Dogs are crossed by artificial selection.
Ethical concerns: reduced genetic diversity may lead to health problems.
Benefits of dog breeding: to obtain dogs with the desired traits
Bulldog is a dog race.
English bulldogs are dogs with a medium-size, they are strong and have a wrinkled face.
English bulldogs have health problems related to the reduction in genetic diversity.
The reduction in genetic diversity of the English bulldog may lead to decrease the future viability of this race.
Bulldogs have shown to have health issues related to the reduction in genetic diversity: short noses: difficulties to breath, folds in the skin: dermatitis, corneal ulcers and otitis externa.
Answer:
The one on the top
Why do plants excrete more carbon dioxide at night than during the day
Answer:
The plants excrete more 'carbon dioxide' in the night because photosynthesis does not take place during the night. Explanation: The plants give our oxygen and take in carbon dioxide because they can prepare food by the process of 'photosynthesis' by using 'carbon dioxide and water'.
Explanation:
Answer:
Plants excrete more carbon dioxide at night because the sun is not out therefore photosynthesis does not take place.
Explanation:
Plants give us oxygen and take in our carbon dioxide because they can receive food through photosynthesis by using carbon dioxide, water and sunlight.
Please help me I don’t understand
Answer:
The answer is A
Explanation:
What happens when the number of organisms in an environment is higher
than the carrying capacity?
O
A. The population will increase quickly.
O
B. The population remains the same.
O
C. The population will decrease.
O
D. The population will increase slowly.
Answer:
C
Explanation:
When the number of organisms in an environment is higher than the carrying capacity, the population most probably will decrease. Thus, the correct option is C.
What is the carrying capacity?The carrying capacity may be defined as the maximum number of individuals that can be supported by a habitat. Every habitat has a fixed carrying capacity. The carrying capacity of the habitat primarily depends on two factors. They are as follows:
The Food to eat.The space to live.When the number of organisms in an environment is higher than the carrying capacity, they feel the scarcity or limitation of food to eat and space to live, this creates more competition between the members of the same or different species.
Thus, the offspring who have favorable variations of relative fitness will survive, and the rest will be eliminated by a habitat. The population will most probably fall down.
Therefore, when the number of organisms in an environment is higher than the carrying capacity, the population most probably will decrease. Thus, the correct option is C.
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What organisms in the ocean absorb the most carbon dioxide?
Answer:
Tiny marine plants called phytoplankton use this carbon dioxide for photosynthesis. Phytoplankton are the base of the marine food web. After animals eat the plants, they breathe out the carbon or pass it up the food chain.
Explanation:
How can radar be used to forecast weather?
Answer:
the radar used in weather forecasting measures the direction and speed, or velocity, of objects such as drops of precipitation.
Explanation:
Answer:
The Doppler radar used in weather forecasting measures the direction and speed, or velocity, of objects such as drops of precipitation. This is called the Doppler Effect and is used to determine whether movement in the atmosphere is horizontally toward or away from the radar, which aides in weather forecasting.
Explanation:
I like radars
Help please! I will mark brainliest! Due soon!!!!
Answer:
C. pulmonary circulation
Explanation:
The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood away from the right ventricle, to the lungs, and returns oxygenated blood to the left atrium and ventricle of the heart.
The state of California has over 1,000 dams, many built from the 1930s to the 1970s to reduce flooding and to create hydroelectric power. A dramatic decrease in salmon and trout populations were noted in the dammed rivers. The state has recently begun to research dam removal to restore rivers to their original flow. Which of the following is a possible benefit of removing some dams?
A. Restoration of migrating fish habitats and related food web species.
B. Increased hydroelectric power output from remaining California dams.
C. Better long-term drought prevention from reservoirs.
D. A decrease in flooding events downstream from where the dam is removed.
Answer: A. Restoration of migrating fish habitats and related food web species.
Explanation:
The removal of dam is likely to increase the incidences of flood because of overflow of river water, it will also decrease the output of electricity generation in California. The dam can keep the river water in a circulation hence can also prevent it to dry. Thus without dam the river water is expected to dry and condition of drought may result in California.
The removal of dam will help in restoring the biodiversity of the free flowing river. The marine animals can migrate in river water which has been restricted from flowing. The salmon and tout populations may get restored in terms of numbers. Also, this initiative will restore the food web as many marine species are dependent on each other for food needs.
Which type of cnidarian is made up of as many as 1,000 polyps that work together to function as a single organism?
a hydra
a jellyfish
a Portuguese man-of-war
a sea anemone
Answer:
C
Explanation:
took pretest on edgu
Answer:
C (a Portuguese man-of-war)
Explanation:
I just clicked it and it was right
Can someone tell me what I got wrong out of these 9?
What is the primary source of energy for almost every ecosystem on earth?
- the sun
What is the flow of energy from the producer and through a series of consumers called?
- a food chain
What kind of food do OMNIVORES consume?
- plants and meats
Which of these categories of animals feed on dead or decaying organisms?
- decomposers
How much DNA located in an egg cell before fertilization
- 50 percent (half of the DNA)
How many parent organisms are there in Asexual reproduction
- 1 parent
The Stamen is considered to be the female part of the plant’s flower
- false
What is the function of the cotyledon in the seed?
- provides food for the embryo
The offspring of _____ will be similar to the parent organism but not the same
- sexual reproduction
Answer:not 100%
Explanation:
What we’re the options for 5 and 9
A solid rock is sitting on the ground. Which claim best describes the particles that make up the rock?
Answer:
vibrating, but not changing place
hope this helps
Answer:
Plz mark Brainliest
Explanation:
It is due to a low entropy level in the rock, and also the type of chemical bonds the rock has.
An example similar to this one would be diamond. It is made up of carbon bonds. But once you take a (real) diamond out of the ground, it very slowly, not visible to the human eye, yet surely is turning back into graphite. (another substance made by carbon bonds)
I hope this helped.
what is a person with an incomplete chromosome missing.
-many genes
-all genes
-a body cell
-a sex cell
A person with an incomplete chromosome is missing many genes (option A)
What are chromosomes?Chromosomes those thread like structures found in the nucleus of cells which play a role as carriers of an organisms material. Composed of a combination of DNA ( acid) and proteins these chromosomes are adeptly compacted to fit within the cells nucleus.
When a person posses incomplete chromosome chromosome it implies that numerous genes are missing. Considering that each chromosome is host to hundreds if not thousands of genes. The absence of a fragment from a chromosome can exert a noteworthy influence, on an individuals overall health.
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A person with an incomplete chromosome is missing many genes. This condition is known as aneuploidy and can lead to serious developmental issues or non-viability, notably in the case of monosomy where an entire chromosome is absent.
A person with an incomplete chromosome is missing many genes. An individual with the correct number of chromosomes is referred to as euploid. However, an aneuploid example, such as monosomy, involves the loss of one chromosome, leading to a deficit of essential genes required for development and survival. Autosomes are non-sex chromosomes, and monosomic zygotes missing an autosome usually do not survive to birth. For sex chromosomes, abnormalities can lead to milder conditions since cellular mechanisms inactivate all but one X chromosome. A common example is trisomy of chromosome 21, which results in Down syndrome, a genetic imbalance that can cause physical and developmental delays.
When a blacksmith is working with hot metal, what places does the thermal energy go?
Question 15 options:
The thermal energy in the hot part of the metal moves to the cold part of the metal.
The thermal energy is transferred to the anvil and hammer.
Heat escapes into the air through convection.
All of the above.
None of the above.
Answer:
The thermal energy is transferred to the anvil and hammer.
Explanation:
In metallurgical processes, part of the thermal energy present in the hot metal is transferred to the anvil and the hammer. This is because the anvil and the hammer have different temperature than the temperature of the hot metal. With that, part of the thermal energy of the metal will be transferred to the hammer and the anvil, in an attempt to balance the thermal energy in the 3 objects.
Final answer:
When a blacksmith is working with hot metal, the thermal energy can go to the cold part of the metal, to the tools, and to the air.
Explanation:
When a blacksmith is working with hot metal, the thermal energy can go to several places. First, the thermal energy in the hot part of the metal moves to the cold part of the metal through conduction. This happens because the atoms in the hot part of the metal vibrate more and transfer some of their energy to the neighboring atoms in the colder part. Second, the thermal energy can be transferred to the tools used by the blacksmith, such as the anvil and hammer, through conduction. Finally, some of the thermal energy can also escape into the air through convection, where the hot air rises and carries away some of the heat.
An invasive species is a non-native species that lives in a region. Human activity has accidentally or intentionally introduced many invasive species into ecosystems. Name two human activities that could contribute to the introduction of invasive species. Explain your response.
1. Intentionally taking species over to another place. Think smuggling animals over, you might think a squirrel is cute and bring it home from your trip to Paris back to the US. That squirrel can now be an invasive species. Don't be spiderman and take a banana on the plane!
2. Unintentionally carrying a species over. This can be on boat propellers, water tanks in boats, airplane wheels, etc. Getting animals stuck in transportation can become invasive.
Answer:
Human travel can lead to an increased risk of invasive species. Native species—both animals and plants—can stow away on cars, trains, boats, and airplanes that bring them to another ecosystem. Climate change also can play a role. Human activity causes increased levels of carbon dioxide and other greenhouse gases in the atmosphere, which in turn creates an increase in global temperatures. Because all species are adapted to a specific climate, climate changes can result in non-native species spreading into other ecosystems.
Explanation:
how much DNA is located in an egg cell BEFORE fertilization?
a.) 100 percent (all of it)
b.) 50 percent (half of the DNA)
c.) none of it
Answer:
B
Explanation:
Gametes are haploid that contains 1 set of chromosomes.
To form a zygote, fertilisation occurs which causes the fusion of a sperm and an egg to form a diploid cell.
In each gamete, they contain 50 percent of the genetic material as compared to the zygote, fusing to form a zygote with 100 percent DNA after fertilisation.
The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. The ancient whale is extinct and is believed to be an ancestor of the present-day whale. What do these skulls most likely show that supports Darwin’s theory of evolution? All populations can adapt and survive.
Answer: It shows the evolution of mutations. Throughout the lifetime of animals and humans depending on their way of life and how they life it they will slowly mutate into a different animal to be able to life that way..
Explanation: Example- Whales use to have legs and walked around the earth. But also loved to swim and play in water. Over time they began to adapt and mutate into what we know f whales now. With no legs, they have large fins to help them swim in the oceans.
Basically your answer is Evolution of the Animal
Answer:
B) Populations change slowly over time.
Explanation:
Took the test on Edge
Hope this helps!!! :)
What happens to a plant that is planted in soil that does not drain water well such as clay?
A)Nothing, plants are unaffected by how well the soil drains water
B)that plant will thrive in the super moist conditions
C)the plant will become waterlogged, and the roots will become deprived of oxygen
Answer:
b
Explanation:
Scientists believe green algae to be the ancestors of land plants. The classification division separating algae from the kingdom Plantae began with fossil evidence. To be successful land plants require certain modifications. This early Devonian land plant had both vascular tissue and, as seen here,
The question is incomplete as it does not have the options which are:
A) roots. B) spores. C) seed pods. D) chlorophyll.
Answer:
A) roots
Explanation:
The vascular plants are evolved from the Bryophytes which are evolved from the algae.
The algae are non-vascular plants and Bryophytes too. The vascular plants developed the vascular tissue to transport the absorbed water and nutrients from the terrestrial surface.
The plants living during the Devonian period possessed the vascular tissue to transport the nutrients but to absorb the nutrients and water, they also possessed the roots.
Thus, Option-A is the correct answer.
Which phrases describe types of freshwater wetlands? Select three options.
-flooded forest like areas
-acidic areas found in northern climates
- grassy areas covered by shallow water
-areas of high elevation that feed into river systems
-small streams that flow into larger streams and wetlands
Answer:
A, B, C
Explanation:
Freshwater wetlands are defined as the lands which have natural supply of water for the whole season due to geological or ecological factors such as tidal flows, connections with groundwater or flooding rivers.
There are three main types of freshwater wetlands swamp, marsh and bog.
A Swamp are able to support tall shrubs, tress, herbs and mosses to grow . These are covered with floodd water or gently flowing water and waterlogged soils prevent woody debris to decompose completely.
Marsh is found near lake, tidal water or rivers and remain flooded periodically. Marsh are the grassy areas covered by shallow water and help to overgrown with coarse grasses, rushes and sedges.
Bog is defined as an area where moss or mots decomposes slowly and form peat . They are characterized by acidic waters, a floor covered by a thick carpet of sphagnum moss and spongy peat deposits. they are generally found in northern climates which support precipitation of water.
Hence, the correct answer is A, B, C.
Answer:ITS A,B,C
Explanation:HOPE IT HELPS ☺
Write a script for a 60-second commercial to help persuade hunters and fishers to take wildlife responsibly. In your commercial, inform they why illegal hunting or overfishing can harm an ecosystem and tell them about laws that deal with this issue. Please help!!!
Irresponsible practices such as illegal hunting and overfishing lead to habitat destruction and species extinction. Overharvesting is a key issue, particularly for aquatic species and contributes to the collapse of various fisheries. Laws such as the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) treaty, have been implemented to counter these problems.
Explanation:Illegal hunting and overfishing can detrimentally impact ecosystems, causing habitat destruction and leading to species extinction. Rivers and streams, often inhabited by a diverse range of aquatic species are modified through damming or water removal, reducing their population. Examples of such occurrences are seen in the United States where 91 percent of rivers have been affected.
Overharvesting through illegal hunting or fishing has manifested itself as a serious threat to many species, particularly aquatic species. Fishery collapse, for instance, the western Atlantic cod fishery collapse, is driven by economic and political factors leading to overexploitation. The widespread unregulated fishing activities, coupled with the capacity for overfishing offered by advanced technologies, exacerbates this issue.
Numerous laws have been enacted globally to protect species and ensure responsible wildlife management. The Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) treaty and national legislation assist in preventing listed species from being transported across nations' borders. Despite the challenges in enforcement, these legal frameworks play a significant role in protecting the environment and the diverse species within it.
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Which of these claims is true of Venus?
a
Venus has two moons.
b
On Venus, a day is longer than a year.
c
Venus is the fourth planet from the sun.
d
The atmosphere of Venus is capable of supporting life.
Answer:
B. On Venus, a day is longer than a year.
Explanation:
Answer:
B) on venus a day is longer than a year.
Explanation:
This i think is because its closer to the sun and has more exposure to the light thus resulting in longer days.
Every 3 letters in the messenger RNA (mRNA) codes for what?
Answer:
The three-letter nature of codons means that the four nucleotides found in mRNA — A, U, G, and C — can produce a total of 64 different combinations. Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which trigger the end of protein synthesis.
Explanation:
A skier is going down a hill at an initial velocity of 9 m/s East. The hill gets steeper and the skier's velocity increases to 18 m/s
East in 3 seconds. Find the acceleration.
MEANING
Answer:
Acceleration is 3m/s2
Explanation:
From the question, the formula for acceleration is ∆velocit÷∆time.
V1=9m/s
V2=18m/s
T1=0 seconds
T2=3 seconds.
V1 represent initial velocity
V2 represent final velocity
T1 represent initial time
T2 represent final time.
Acceleration=v2-v1÷T2-T1
=18-9/3-0
=9÷3
=3m/s2.
Acceleration is 3m/s2.
Acceleration is the rate of change of velocity of a body per unit time.
The acceleration of the skier is 3 m/s² eastward, calculated by dividing the change in velocity (9 m/s) by the time interval (3 s).
Explanation:The question involves finding the acceleration of a skier who increases their velocity from 9 m/s to 18 m/s eastward over a time interval of 3 seconds. To find acceleration, we use the formula a = ∆v / ∆t, where ∆v is the change in velocity, and ∆t is the change in time. The change in velocity (∆v) is 18 m/s - 9 m/s = 9 m/s. The change in time (∆t) is 3 seconds. Therefore, the acceleration (a) is 9 m/s ÷ 3 s = 3 m/s² eastward.
The skier's acceleration can be calculated using the equation:
a = (vf - vi) / t
where a is the acceleration, vf is the final velocity, vi is the initial velocity, and t is the time interval.
In this case, the initial velocity is 9 m/s East, the final velocity is 18 m/s East, and the time interval is 3 seconds.
Plugging in these values, we get:
a = (18 m/s - 9 m/s) / 3 s = 3 m/s² East
Therefore, the acceleration of the skier is 3 m/s² East.
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2) Take long showers. Taking long showers wastes water instead of saving it.
3) Water. Water is not metal.
Answer: For 2, taking long showers is the answer. For 3, B is the answer.
Explanation: