Before rock can become soil, it must undergo certain processes. One process in the formation of soil involves plants. How can plants chemically change rocks into soil?
A: They weather rocks with acid.

The students in an engineering class built a robot that stacks wooden blocks. A built-in computer controls the movement of the robot. The computer in the robot performs a function most similar to which part of the human body?
A: brain

In order for sediments to become rock, the sediments are generally
A: compacted.

Turning off the light when leaving a room is an example of
A:
conserving energy.