tributary

reservoir

eutrophication

wetland

watershed

saturated zone

the process of applying water to areas of land to make them suitable for growing crops

DESALINATION

concentration

hardness

filteration

water pollution

non-point source

point source

drought

flash flood

kinetic energy

neap tide

rip current

salinity

frequency

wave

Features of the ocean floor

What is upwelling?

Why is upwelling important?