D because both a & b are correct
Answer:
Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
Answer:
Cement
Cement is made by heating powdered limestone with clay. Cement is an ingredient in mortar and concrete.
Human cells spend most of their time in interphase, where they do not divide. In interphase, a cell may grow, obtain and nutrients and metabolize them, read DNA, etc.
Mangrove forests were traditionally viewed as forests that are mosquito-infested, and unproductive wastelands. This is an ecosystem which can be found near the coastline and can occupy a considerable amount of area. This is a home of various species. <span>
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