|
Watershed- Land area that
captures and drains water into a river, stream, or body of
water. Every body of water has a watershed that cleans the
water entering it naturally unless the watershed itself becomes
contaminated.
Water Stress- A condition
in which a community does not have enough water available
on a regular basis to meet its basic needs.
Water Vapor- Water in gaseous
form. It is one of the most abundant greenhouse gases. Methane
turns into water vapor at high altitudes. This contributes
significantly to the greenhouse effect.
Wavelengths- A wavelength
is the distance between identical points in the cycles of
a wave, such as the distance from the peak of one wave to
the peak of the next wave. On the electromagnetic spectrum,
the shorter wavelengths carry more energy than the longer.
Weakness- Symptoms causing
weakness of the body.
West Nile Virus- A virus
spread by mosquitoes that has a mild form-West Nile fever-and
a serious form-West Nile encephalitis, or meningitis. The
serious form causes swelling of the area around the brain
or spinal cord. |
Western Blotting- Technique
by which proteins are separated and immobilized on a paper
sheet and then analyzed, usually by means of a labeled antibody.
Wetland- A low area that
is saturated with moisture. Wetlands are often a natural habitat
for wildlife.
White Blood Cell- The cells
which form the basic constituents of the human immune system.
Whooping Cough- Infectious
cough that can be dangerous to infants.
Woodland- Sometimes used
to mean a forest, but more commonly an area where trees canopy
or shrubs coverage is at leave 25% of the total land area.
World Health Organization (WHO)-
A part of the United Nations founded in 1948, WHO helps people
all over the world learn about and fight disease.
|
