To move substances against a concentration or electrochemical gradient, the cell must utilize energy in the form of ATP during active transport. Primary active transport, which is directly dependent on ATP, moves ions across a membrane and creates a difference in charge across that membrane.
Answer:Convection currents in the upper part of the mantleExplanation:
Answer:
It produces our seasons ( spring, summer, fall, winter) as well as the enviroments around the world. If Earth was tilted just a tiny bit more towards the sun half of the world might be on fire but Earth is tilted enough to create the perfect atmosphere for rain forest and deserts
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