Answer:
Over a vast amount of time, millions of years, the earth gradually cooled. When the temperature dropped enough, water vapor condensed and went from a gas to liquid form. This created clouds. From these clouds, the oceans formed and the oceans absorbed a lot of the carbon dioxide in the atmosphere.
Explanation:
A gene is the basic unit of heredity, DNA a self replicating material and chromosome a structure of nucleic acids and protein.
Answer:
Potassium phosphide (K3P)