Q: Answer the question

Growth and activities of organisms can speed up the chemical weathering of rocks. Which organisms naturally cause most of the chemical weathering of rocks?
OPTIONS:
- small mammals
- plant seedlings
- mosses
- insects

A: mosses

Q: Answer the question

How many atoms are in one formula unit of magnesium hydroxide, Mg(OH)_{2}?
OPTIONS:
- 6
- 5
- 4
- 3

A: 5

Q: Answer the question

In multicellular organisms, different structures have different functions. Which function is carried out in the leaves of a plant?
OPTIONS:
- absorbing food
- producing flowers
- absorbing light
- making seeds

A:
absorbing light