Warm air masses that affect the west coast of the united states are called

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic

What is meant by the term relative location?

Plz hury on a timer which statements explain what happens at deep-ocean trenches? check all that apply. crust is formed. mountains are formed. seafloor spreading occurs. crust becomes molten rock. denser plates slide under lighter plates.