The arrows in the diagram show continuous, cyclic movements from one subsystem to another without an end. Reflect upon your previous answers and knowledge of Earth's subsystems to determine whether the arrows in the diagram best
represent matter, energy, or both. Explain your answer and provide at least one example that occurred during the
Precambrian era.

Which reason best explains why certain areas of southwest asia have low population density? a. the semi-arid climate makes farming difficult because it produces very little rainfall.b. the moist climate limits job opportunities because it reduces oil production.c. the semi-arid climate produces heavy rainfall that contributes to devastating floods. d. the moist climate reduces agricultural production by causing water shortages.