CO2 is considered waste
But respiration also produces H2O
Answer:
3,2,4,1 is the correct order.
Explanation:
3 would be cuz initially there were no life forms. 2 cuz bacteria came and then primitive and simple animals and plants evolved. Then 4 cuz simple life came from bacteria. Then 1 bc from those simple life an complexed life evolved.
Is a well-explained system of ideas, and usually theories have a lot of evidence that support the ideas as well