True or false treams of water called ocean currents move warm or cold water, warming or cooling the nearby land.

This is true.

They are streams however, not treams. They cool or warm not only the land where they go but also the air. There are numerous water currents in the world with some of them being the famous Gulf stream that warms the parts of Europe where it passes, especially in northern Europe where it is generally cold all the time.

Nonmetals usually react by gaining electrons