Answer:
Amphibians
Explanation:
They had just shown up during the Carboniferous period and were still living in the water.
C. Ice is less dense than water which means water condenses when it freezes allowing the ice in a lake to float on top of the water preventing the water below from freezing.
ATP stand for adenosine triphosphate. It consists of the nitrogenous base adenine and is linked to a sugar molecule. It is necessary for human life because it gives the body energy
