30 urgent what are the layers of the atmosphere from closest to farthest from earth's surface? a. stratosphere, troposphere, mesosphere b. mesosphere, troposphere, stratosphere c. troposphere, stratosphere, mesosphere d. mesosphere, ionosphere, stratosphere

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Describe two recent or ongoing space missions.

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction