Answer:C) light caused the elodea plants to photosynthesize, releasing O2 gas
Explanation:
Got it right on my test
Useful traits have been accumulated in plants and animals over the centuries by how plants have undergone through certain phases, specifically called selection. Most of these traits are accumulated naturally but others may be acquired in the opposite way through man-made cultivation. Hope this answers your question.
An altered protein could occur.
It could be a different protein or a non functional protein or no protein at all.