The 4 different types of microorgansisms?

Rank the three variables in terms of how strongly they affect the "species" composition of the bacterial communities. place the variable with the weakest effect on the left and the variable with the strongest effect on the right.

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen