Because of high birthrates and low deathrates.... the one child policy however slowed this down significantly!
hope this helps!!
<span>Ocean currents act much like a conveyer belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.</span>
All of those are included in the earth's hydrosphere.
