Answer:
1. Ice
2. Plant and animal remains
Explanation:
I took the test
Ice is the natural element that is one of the best preservers of prehistoric life.
Plants fossils help scientists to identify different ice ages.
What is Fossil?A fossil may be defined as the dead and organic remains of past organisms that are buried under the earth's surface millions of years ago.
The presence of prehistoric life may be best understood by the natural elements such as ice that has a definite composition with respect to time.
Plants and animal remains illustrate the occurrence of fossils which assist scientists in estimating the different ice ages.
Therefore, it is well described above.
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Translation is the goal is to produce ____?
Answer:
to convey the original tone and intent of a message, taking into account cultural and regional differences between source and target languages.
Explanation:
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Which can change from one state of matter to another at the temperatures and pressures experienced at Earth's surface?
water
Oxygen
nitrogen
carbon dioxide
You observed several chemical reactions throughout the lessons in this unit. And we discussed them in class.
A. List 5 signs (observations) that indicate a chemical reaction has occurred.
B. Give 1 specific example for 2 of the signs you listed.
Answer:
1. bubbling
2. steam
3. change of color
4. change of form ( solid, liquid, gasses)
5. dizzolving
example:
1. Rock melting
2. water steaming
Explanation:
I'm trying sorry if its wrong
Five signs of a chemical reaction are a change in color or temperature, the formation of a gas or precipitate, and a change in smell. The change in color can be observed when iodine is added to starch, and the production of gas can be seen when baking soda reacts with vinegar.
Explanation:A. There are several signs that a chemical reaction has occurred. Some of the key observations include:
Change in colorFormation of a precipitateProduction of gasChange in temperature or energyChange in smell or tasteB. Here are specific examples for two of the signs listed above:
Change in color: When you add iodine to starch, the mixture changes to a deep blue color, indicating a chemical reaction.Production of gas: Baking soda reacts with vinegar to produce carbon dioxide gas. This can be observed as the fizz or bubble formation when the two substances mix. Learn more about Chemical Reactions here:https://brainly.com/question/34137415
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Antibodies are very specific to the antigen’s shape. Make a connection to two other shape-specific proteins.
Label the pant cell.
Answer:
Explanation:
D:Nucleus
B: Cell wall
F: vacuoles
G: Endoplasmic reticulum (ER)
E: Golgi Body
C: Also Endoplasmic Reticulum (ER)
which of the following is an example of chemical weathering
A. A rock reacting with oxygen in the air and breaking
B. rocks breaking from changing temperatures
C. sediment being deposited at the mouth of a river
D. Rain drops making tiny holes in the side of a cliff
Answer:
b
Explanation:
Answer:
( B ) rocks breaking from changing temperatures
Explanation:
:)
What does the theory of evolution tell us about living things? Group of answer choices The environment can make them change rapidly over a short period of time. They create fossils when they die. Their environment makes them change slowly over time. They can give us clues about extinct species.
Answer:
Their environment makes them change slowly over time.
Explanation:
The theory of evolution is based on the act that the species are related and gradually changes over time and it relies on a genetic variation and affects the physical properties of the organisms. The individual who has the most suited characteristics of its to the environment tends to survive longer as they have disease resistance. And this gradually leads to the evolution of new species.Answer:
Their environment makes them change slowly over time.
Explanation:
i got it right on the test
(BRAINLIEST + 17pts) Which layers of the sun can only be seen during a solar eclipse? Select ALL that apply.
a. core
b. corona
c. photosphere
d. chromosphere
Answer:
B
Explanation:
Corona because the chromeosphere lies just before the corona. LOL
What is the best explanation of electric current in a wire? Electrons build up in the wire and create a charge. Protons are pushed along by electric forces. Electrons flow because of electrical attraction and repulsion. Atoms move because of heat.
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:
What is an Examples of carnivores
Answer:
A carnivore is any animal that only eats meat. Such as a lion or a snake.
Explanation:
Carnivores are animals that eat other animals, and examples include lions, polar bears, hawks, snakes, and spiders. They can be obligate carnivores, needing only meat, or facultative carnivores, which can also eat plants.
Here are some examples of carnivores:
Lions - These wild cats are obligate carnivores, meaning they rely entirely on meat for their nutrients.Polar Bears - Primarily consume seals and other marine animals.Hawks - Birds of prey that hunt and feed on smaller animals like rodents and other birds.Snakes - Many species of snakes are carnivorous, feeding on prey such as rodents, birds, and amphibians.Sharks - These marine predators feed on fish and marine mammals.Spiders - Invertebrate carnivores that capture and eat insects and other small arthropods.explain how the molecular structure of water gives it properties that make it useful to humans
Answer:
Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density.
Final answer:
Water's molecular structure, characterized by a bent shape and polar nature, leads to hydrogen bonding. These bonds contribute to water's unique properties such as being a good solvent, having high boiling and melting points, and being important for biological processes. Understanding water's structure provides insight into its crucial role in sustaining life.
Explanation:
The molecular structure of water contributes to various properties that are useful to humans. The H2O molecule has a bent shape, with one oxygen atom covalently bonded to two hydrogen atoms. This geometry and the resulting polar nature of water molecules lead to hydrogen bonding, a strong type of intermolecular force. Hydrogen bonds allow water molecules to stick to each other, which explains why water has a higher boiling and melting point compared to other molecules of similar size.
Additionally, this structure enables water to dissolve a wide range of polar substances, making it an excellent solvent for biological processes and industrial applications. Water's cohesive and adhesive properties are also attributed to hydrogen bonding, allowing for phenomena such as capillary action, which is crucial for plant hydration. Furthermore, the slight dissociation of water molecules into ions facilitates the generation of pH, a key aspect in many chemical reactions, particularly those within living organisms.
Despite being a simple molecule, water's properties have a profound impact on life on Earth. Scientists use quantum theory and other advanced calculations to investigate the electron density around water molecules and fully explain its unique properties. All these features underscore the significance of water's structure, which is central to its diverse functions and importance.
How does convection work?
Heat energy can be reflected.
Warmer air will always move below cooler air.
Cold air, which is denser than warm air, sinks.
Heat is transferred between two objects in contact.
Answer:
Heat is transferred between two objects in contact.
Explanation:
Heat is transferred between two objects in contact.
Help give me the right amdwer
What does it mean when a trait is independent from another trait? Give one example.
Answer:
It means one trait does not influence the expression of the other. Example is given in the explanation section.
Explanation:
A trait is the phenotypic characteristics an organism possesses. It is determined and controlled by genes. According to Mendel, an organism receives two forms of every gene called ALLELE. Each allele of a gene encodes a different trait.
Mendel, in his law of independent assortment stated that the inheritance of a trait encoded by the alleles of one gene does not influence the inheritance of another trait encoded by the alleles of another gene. A trait is said to be independent of another if it doesn't influence the expression of the other trait.
An example is the seed colour and seed shape trait in a plant. The seed colour trait is encoded by a certain gene and its expression and inheritance is independent of the seed shape trait encoded by another gene.
Why is it virtually certain that except for identical twins, even offspring of the same parents will not be genetically identical?
Answer: Because they have different genes, or they might be the opposite gender.
Explanation:
The Seven Sisters are seven stars located more than 400 light-years away in the Taurus constellation and they can be seen here with Venus and another constellation, Orion. Why do these stars seem so small compared to our Sun, also a star?
A) Our Sun is much larger than any of the Seven Sisters.
B) Our Sun is much closer to Earth than the Seven Sisters.
C) The Seven Sisters are ancient stars; the Sun is a young star.
D) Stars found in constellations are much older and smaller than any other
Answer:
Option B
Explanation:
The seven stars are bigger in size as compared to the size of the sun. Also, these stars are more luminous as compared to sun. However, these stars appear small in size in comparison to sun because of their distance from earth. The larger is the distance, the dimmer is the star. Sun is at a distance of 0.0000158 Light years from Earth while the nearest star of the seven sister i.e Alpha Centauri is 4.37 light years away.
Hence, option B is correct
The stars of the Seven Sisters look smaller than the Sun because they are far more distant from Earth, while the Sun is relatively close.
The Seven Sisters, or the Pleiades, appear small compared to our Sun because of the immense distance separating us from them. Although some of the stars in the Pleiades might be larger than the Sun in terms of light-giving power or actual size, they are over 400 light-years away. In contrast, our Sun is much closer to Earth, at about 93 million miles away, making it appear significantly larger in the sky.
The correct answer to why the Seven Sisters seem so small compared to our Sun, also a star, is B) Our Sun is much closer to Earth than the Seven Sisters.
Which is a cause of natural selection?
O A. Lack of predators
O B. Unlimited shelter
O C. Stable weather
O D. Limited food
Answer:
D. Limited food
Explanation:
Natural selection is caused by some sort of competition within a population where the organisms with the "better" traits live longer
The cause of natural selection among the following is limited food. So option D is correct.
Natural selection is the natural process by which organisms that are more well-adapted to their environment are more likely to survive and multiply.
The process of natural selection can also result in speciation, which is the process by which one species produces a completely different offspring. In positive Darwinian evolution, few types of genes are favored because they increase the likelihood of reproduction or survival. This increases the rate of evolution.
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Why is Dr. Tumpey's radical approach to "virus engineering" controversial? What are the potential benefits of this approach?
Explanation:
It is based on the principle of continuous improvement. The standard enables companies to define what a quality product should be and how it should meet customer needs.
Because Dr. Tumpey's approach requires the construction of artificial yet functional viruses to study them. This can be beneficial because it allows future pandemics to be identified and tackled before they happen.
We can arrive at this answer because:
Dr. Tumpey believes that virus engineering should be used to further the study of potentially pathogenic viruses.In this case, he states that viruses must be constructed artificially, but keep them functional, so that all their characteristics, pathogenicity, and future evolutions can be studied in depth.This is controversial because many fear that these artificial viruses could be used as biological weapons and promote mass destruction.However, we cannot fail to state that this can be a beneficial approach to prevent new pandemics from happening, as the study of possible evolution and pathogenicity of these viruses can create controls that prevent them from spreading and creating diseases all over the world.
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ANSWER ASAP!!! What structural adaptation of the A. cristatus lizard helps them in the water?
strong claws
sunning on rocks
fishing in herds
partially webbed feet
The adaptation that helps the cristatus lizard is the presence of a partially webbed feet.
What is an adaptation?When we talk about adaptation, we are referring to those structures that allow an organism to become better fit into its habitat.
In the case of the cristatus lizard, the adaptation that helps the organism in water is the presence of a partially webbed feet.
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Answer:
Partially webbed feet!
Explanation:
I took the quiz and got it right.
K12
What is the light-colored outer shadow on Earth's surface cast by the Moon during a solar eclipse?
Answer:
penumbra
Explanation:
Chemical weathering is the breakdown of rocks, soils, and minerals through _______.
a.
atmospheric or biologically produced chemicals
b.
atmospheric conditions
c.
the movement of wind and water
d.
mechanical means
Please select the best answer from the choices provided
A
B
C
D
Rainwater becomes somewhat acidic as a result of the air's carbon dioxide dissolving in it. Weathering can be brought on by a reaction between precipitation and the minerals in the rock. Therefore, choice A is right.
What Chemical weathering is the breakdown of rocks?Chemical Weathering Rocks and soil go through chemical weathering, which changes their molecular makeup.
As an illustration, the process of carbonation occurs when water and carbon dioxide from the air or soil combine on occasion. Thus, carbonic acid is created, a weak acid that can dissolve rock.
Chemical weathering is the process by which the minerals in a rock are altered by chemicals in rainwater.
Therefore, Chemical weathering is the breakdown of rocks, soils, and minerals through atmospheric or biologically produced chemicals
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Answer: A
Explanation:
got it right on edge
What is most likely the cause of the differences in birds in the picture
Answer:
I can't see the pictures but I'm guessing the enviroment
they're in probably causes a difference in their beaks.
please help ASAP!!!! will give brainlsit :))
An ecosystem is a community of living organisms and the nonliving components of the environment Energy flows in an ecosystem in one direction through food chains, and a food web is made up of all the food chains within a community of organisms. Biodiversity refers to the variation in species found within an ecosystem, and it is measured in two ways: (1)
species richness, which is the total number of different species in an ecosystem; and (2) relative abundance, which is a measure of how common each species is within the ecosystem
Imagine that carnivore D represents the sea lamprey in the Great Lakes ecosystem. This invasive species has been present there
since the 1800's yet the ecosystem has remained stable. How can you explain this?
A) The sea lampreys are indigenous to salt water and have a very short life
span
B) There are complex feeding mechanisms at work to protect the other
species in the food web.
C) The sea lampreys only feed on one type of fish so they have only depleted
that single population.
D) Marine scientists have developed a method to effectively remove the
Lampreys from the Great Lakes.
Answer:I think its b, but I may be wrong, correct me if I'm wrong. Apologies if i am.
Explanation:
The reasonable explanation seems to be that there are complex feeding mechanisms at work which protect the other species on the Food Web.
What are invasive species?A living organism, which is not native to an ecosystem, if introduced into the said ecosystem, will be called an invasive species.
Invasive species directly harm the native species, and the environment and have indirect impacts on human health and the economy.
Invasive species are usually those species, despite not being native, grow and reproduce in the new environment quickly and cause harm to the native species.
Invasive species are usually spread by unintentional human activities. Humans can travel around the globe and their carriers and goods may be the host of transmission for invasive species.
Propellers of boats and ballast water of ships can be hosts for carrying various aquatic organisms, which travel to different regions of the world as the ships travel.
Therefore the correct option is B.
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What are the most common environmental stimuli that animals respond to?
What are the major responses to weather and temperature?
Answer:
Migration, defense and courtship, as a temperature response they will hibernate or migrate.
Explanation:
WILL MARK BRAINLIEST!!!!
The Hardy-Weinberg equation is an expression showing the frequencies of 100 percent of the alleles for a specific gene in a population.
If biologists can show that either p or q is changing over a period of time, what is occurring in the population?
The population is evolving.
The population is decreasing in size.
The population is stabilizing.
The population is not evolving.
when three molecules of carbon dioxide react with 3 molecules of RuBP during the carbon cycle six molecules of the sugar g3p are produced. one g3p molecule exits the Calvin cycle during phase 2. what happens to the other five g3p molecules?
I need help plz!!!
Answer:
The other five molecules of G3P are used to regenerate 3 molecules of Ribulose-1,5-biphosphate.
Explanation:
Calvin cycle, also called light independent stage of photosynthesis. It is the stage where the NADPH and ATP produced during the light stage is used to synthesize glucose.
Calvin cycle occurs in three main stages viz: Carbon fixation, Reduction and Regeneration.
In the carbon fixation, three (3) molecules of CO2 reacts with 3 molecules of CO2 acceptor called Ribulose-1,5-biphosphate molecule catalyzed by RUBISCO to form two molecules of 3-phosphoglycerate (PGA)
In reduction stage, PGA is reduced by NADPH and phosphorylated by ATP to form 6 molecules of Glyceraldehyde-3-phosphate (G3P). As stated in the question, 1 molecule of G3P exits the Calvin cycle to be used to form glucose while the other 5 molecules proceeds in the cycle.
In the third stage called Regeneration stage, the first (5) molecules of G3P are rearranged in a series of reactions into 3 molecules of the five-carbon CO2 acceptor called Ribulose-1,5-biphosphate (RUBP).
Gregor Mendel is known as the "Father of " because of his work with pea plants.
Answer:
Genetics
Explanation:
Answer:
genetics
Explanation:
How does the body work to prevent further damage when a bone is
fractured?
O
A. Blood flow to the area will decrease to prevent movement.
O
B. Cells begin rapidly dividing to constrict the area and begin healing
the fracture,
O
C. Immune cells will act to heal the fracture.
O
D. The area around the bone will swell to make movement difficult.
SUBMIT
Answer:
The answer is B
Explanation:
The body will respond to the broken bone by restricting it in blood clots and then immediately sends cells to heal the fracture
Answer:
APEXXXXXX
Explanation:
The area around the bone will swell to make movement difficult.
Which best explains how the human body obtains energy from food?
O
O
A. By inhaling oxygen into the lungs
B. By exhaling carbon dioxide
C. By removing dangerous wastes
D. By breaking and reforming chemical bonds
O
O
Answer:
D
Explanation:
I am super stuck can someone help me out??
Answer:
D
Explanation: