Something that is unclean and not safe to use e.g. polluted water.

A plant or leaf cell that is swollen with water.

Can be caused by inadequate or infrequent application of water, poor soil, high heat, or intense winds. Sypmtoms include wilting leaves, dry soil, or dry, brown, or dead leaf tips.

Process by which water moves from an area of high concentration to an area of low concentration through a semipermeable membrane, such as a root hair cell wall.

Capillary action is due to the attractive forces between water molecules, and is

Water held between soil particles by capillary forces (attraction between positive and negative ions). This water IS available for absorption by plant root hairs.

The level below which the ground is saturated with water & separates the zone of saturation from the zone of aeration.

It rises and falls with rainfall.

These organisms help the soil retain water by improving the structure of soil, reducing erosion, and increasing water absorption through their movement and digestion.

How did the southwestern U.S. become agriculturally suitable (arable)?

What are the environmental costs of farming in the desert?

Irrigation system that conserves the most water and puts it right where the plant needs it the most. It uses small pipes that slowly drip water just above ground directly to each plant to conserve water to use for crops.