the water on or surrounding the surface of the earth, including the water in the oceans and in the atmosphere
the process of removing salt from sea water
any geological formation containing water. It is not a large empty space underground, but rather the tiny spaces in porous rocks and between rocks.
water held in aquifers below the surface of the earth
the upper limit of the water level when the ground is filled with water. It rises after rains and lowers as water is pumped out or there is a drought.
movement of hail, mist, rain, sleet, or snow from the atmosphere onto the surface of the earth
having openings or pores which allow water or gases to pass through
energy (in the form of light or heat) coming from the sun
average, middle point between extremes, holding a middle position
a region with less than ten inches of precipitaion per year and having extremes in temperature
height above sea level
that which distinguishes one object, person or thing from another
to bite or tear grasses at the roots, many times pulling up the entire plant. This leaves the soil exposed and vulnerable to erosion.
almost constant winds blowing in one direction; in the Northern Hemisphere they blow in a belt from northeast to southwest and in the Southern Hemisphere in a belt from southeast to northwest.
the movement of deep cold nutrient rich waters to the ocean surface.
small, planktonic organisms that form the major food source for whales.
a hot, dusty wind blowing from the Libyan desert of northern Africa into Italy, Malta and Sicily
continuous winds coming from the west
the side or direction away from the wind
the creation of wind paterns by the movement of the earth as it spins to the east
close-fitting pebbles and stones that prevent erosion of the underlying surface
an Arabic term for "desert pavement"
a sea of land
a point where the water table rises to the surface resulting in significant growth of vegetation
dry grasslands south of the Sahara
a prolonged period of dry weather; lack of rain
Organization of Petroleum Exporting Countries
thermal refers to heat and buffer is a zone of transition between different zones. We know large bodies of water moderate extremes of temperature.
the process of productive land losing its fertility due to overuse, overgrazing, removal of land cover, and salinization