What factor does not contribute to water stress on the Earth

Precipitation differences

Explanation:Precipitation differences are the factor that does not contribute to "water stress" on the Earth.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.