Answer:
He chose to work with pea plants because they have easily identifiable traits. For example, pea plants are either tall or short, which is an easy trait to observe.
Explanation:
Stimulus causes an action or response, like the ringing of your alarm clock if you didn't sleep through it. Stimulus is a word often used in biology — something that causes a reaction in an organ or cell, for example. ... For more than one stimulus, use stimuli, not stimuluses.
Im so sorry but your not putting enough details for me to answer your question
Less prey means less predatoors
The raw materials of H2O and CO2 are located there