Suppose the climate in an area becomes much drier than it was before what kinds of variations in the areas plants might be acted on by natural selection?

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.

How much water is in the ocean in cubic kilometers

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )