What type of weathering produces karst topography?
a) wind
b) hydration
c) dissolution
d) oxidation

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

What do your cells need to live? a. carbon dioxide b. carbon c. air d. oxygen