Explanation:
The abiotic factor are the ice age , meteor , chemicals , never hinder or help the evolution or development of the biotic factors .
As , the ice age can resists or slow down the growth of many of the tropical plants and animals .
But it facilitates the evolution of the organism that can get adapted to the cold climate .
A large amount of oxygen in the environment which is produced by the cyno bacteria helps the evolution of the animals .
