Reed is trying to create a model that represents the movement of the Earth's crust. He places a beaker with water in it on a heating source that has two wood blocks floating on the surface of the water. As the water heats up it rises to the surface causing the blocks to move away from each other.

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.