Why did Gregor Mendel use peas in his experiments? Peas grow very slowly.
Pea reproduction cannot be controlled.
Peas normally produce very few offspring.
Peas have characteristics that have two forms.

He used peas because they are self pollinating,they grow fast,and they have many traits

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.

i am going to guess that it is co2.