Jena's Rants
Ad 2:
2001-08-14 14:28:13 (UTC)

That is the thing about cycles, they just keep coming.........

The Water Cycle

Water makes up about 70 percent of the weight of most
plants and animals. Aquatic plants have no difficulty
getting water. Land plants absorb water through their
roots. If there is no moisture available, land plants
cannot grow, so the amount of available water determines
which species of land plants will grow in a particular

The water vapour in the cool upper atmosphere condenses and
forms clouds. These water droplets may fall as rain, hail,
snow or sleet. Some of the water that reaches the ground
runs along the surface and collects in streams, ponds,
lakes, or other bodies of water. The remaining water soaks
into the ground. This water seeps slowly down to the
bedrock. This ground water runs back gradually to the
lakes, oceans, and other bodies of water.

Water in the soil is absorbed by the roots of plants. By
eating plants, animals obtain some water, but most of their
required water comes directly from drinking. Plants break
down part of the water into oxygen and hydrogen during
photosynthesis. However, much of the water that is returned
to the atmosphere as water is lost from the pores in the
leaves of plants. When plants and animals die, the water in
their tissues is released back into the environment.

Water vapour returns to the atmosphere through the pores of
plants. Water vapour is also collected from the soil's
surface by drying winds. Most water is returned to the
atmosphere by evaporation from the oceans, lakes, and
ponds. The warmth of the sun and the strength of the wind
are the main factors affecting the rate of evaporation.
Once in the atmosphere, the water vapour condenses and
forms clouds. Then the cycle begins again.