The answer is the second choice: variation, overpopulation, adaptation
Nitrogen Fixating bacteria ( such as cyanobacteria or clostridum) can convert gaseous nitrogen in the air into amonia, a compound that organism can use to make amino acid and other nitrogen-containing organic molecules
Answer:
Mutualism
Explanation:
both humans and plants benefit from it because we breath out carbon dioxide
Answer:
Ant sting release methanoic acid or formic acid. The chemical formula of methanoic acid is HCOOH
