The breakdown of pollutants, water purification and soil formation are valuable
services provided by:
A hellstle sources
C. ecosystems
B. positive feedback loops
D. negative feedback
A
HELP ASAP

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u.s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u.s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u.s.

What does the splanchnic nerve innervate?

One student group hypothesized that the dry baker's yeast must be alive.the temperature change, odor, and bubble foation, they said, indicated whych characteristic of life