Alcohol or other drugs are involved in 70% of teen suicides.
a. true
b. false

C) Warm water at the surface flows toward the poles and sinks as it cools.

Explanation: One of the factors that influence the circulation of ocean water is solar radiation. Most of this radiation is absorbed by the waters in the Equator. Then, said warm water flows towards the poles. While at the same time, cold water comes from the poles and flows towards the Equator. When the two temperatures crash, the cold water absorbs the heat from the warm water. Finally, as the warm water is cooling, it starts to sink, and the cold water starts to rise.