Answer;
-The less dense, the more the ice will float, allowing animals to stay afloat and not in the water
Explanation;
-When water freezes, water molecules form a crystalline structure maintained by hydrogen bonding. Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
-This means that ice floats on water and that lakes freeze from the top down to the bottom.This is vital for animals that live on ice, as their habitats would be greatly reduced or not exist at all if ice sank.
I am no expert but I think the correct answer is C.
DNA.
DNA has a phosphate and deoxyribose sugar backbone.
Answer:
B. Space telescopes are above the distortion of Earth's atmosphere, cloud and light pollution.
Explanation:
Telescopes are powerful optical instrument which have the ability of viewing distant objects such as stars and galaxies in space and hence affords us the ability to make findings and research without having to get so close. Adoption of space telescopes is preferred to those place on earth usually due to the effect of absorption and reflection which has would have impacted some electromagnetic spectrum before reaching the earth. Also, the distortion introduced into measurement taken due to the the Earth's atmospheric conditions such as clouds may blurr measurement obtainednis also a vital reason for the adoption of space telescope.
Answer:
Chemical evolution is the formation of complex organic molecules from simpler inorganic molecules through chemical reactions in the oceans during the early history of the Earth.
It the first step in the development of life on this planet
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