Answer: The symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate formation of root nodules, enlargements of plant cells and bacteria in intimate association. Within the nodules the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development. brainliest?
Explanation:
Biochemical stress is another factor fire
I believe the answer is different versions of a gene :)
They saw how their are different variations of animals and how not all humans are alike with different genetic traits and physial apprerance
