A tour guide taking a group through Costa Rica describes it as a lush, moist, tropical rainforest. A
Biological community
B
Biosphere
С
Population
D
Ecosystem

answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

if you know your abc's you should be able to get your answer or just use google

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )

the answer would be b.:

880,000.

hope it ,

bioteacher101