Describe the ecological succession that will occur after agricultural land is abandoned and plants are allowed to grow without human intervention.

Witch layer of the atmosphere has the most air pressure

Which of the following regions suffers the most from acid rain? a. the area around vancouver c. the area below atlanta b. the area below detroit d. the area above montreal

The plants growing on scotlands highland moors are a)mixed forestb)grasses and low shrubsc)evergreen treesd)palm trees and ferns