The answer is 0.5 to 1 micrometer thick.
Answer:
3. A 2. B. 1. B
Explanation:
Im not to sure about 1. but other than that your good sorry if this didn't help
Answer:
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
Answer:
Atherosclerosis, sometimes called "hardening of the arteries," occurs when fat, cholesterol, and other substances build up in the walls of arteries. These deposits are called plaques. Over time, these plaques can narrow or completely block the arteries and cause problems throughout the body.
Explanation:
C. all steps need light
without light there is no way that phtotsynthesis will work because it needs light to be activated