Answer:
Because 2 forces are stopping the crate, friction and gravity. While only one force is trying to move it forward.
Answer:
A solid rock becomes soil when it breaks down and combines with water, air, and organic matter.
Answer:
D. They find more things that are not understood
Explanation:
After discovering something, scientist tend to find something related that sparks their curiousity.
Explanation:
The gap between the two neurons is known as a synapse.