Question

Of the following weather factors, which is most important in determining the plant and animal populations that can exist in an area?

air pressure

humidity

precipitation

wind direction
I think it's the second or third??? Please help

Answer 1

The third one influences directly the second one and the first one is important but is only a result of the altitude you are in. From these I would think is the second, but what causes the first one is definetly more important.

Answer 2

Precipitation