How can you tell in which direction the animals are walking?

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing

Which is the best example of plant tissue? the answer is d (just took the test)