Answer:
D.both A and B
Explanation:
because if there some option,like abcd and the letter d. is both a and b that is the correct answer.
Answer:Mutualism
Explanation:a relationship in which both species benefit, is common in nature. In microbiology, there are many examples of mutualistic bacteria in the gut that aid digestion in both humans and animals. Commensalism is a relationship between species in which one benefits and the other is unaffected.
Acidic fruits milk
Basic soap
The sun.
I hope this helped
