"Biodiversity"
.... mercury then got into the fish and into the humans
who ate the fish.
Biodiversity promotes a healthy environment. Environments rich in
biodiversity are stronger and can with stand things such as drought, disease,
and other stresses that environments that lack it cannot. In the video, during
the drought, the side of the field with a more diverse environment held stern as
the other wilted away.
Areas that are very diverse are very important to humans as well. They
provide a wide arrange of pharmaceuticals such as aspirin and penicillin. "Some
40 percent of U.S. prescriptions are for pharmaceuticals derived from wild
plants, a .....
|
|
Can We Say "NO" To Recycling
.... disposal at landfills1. By the accumulation of garbage throughout the
years, space available for garbage has largely diminished. In the states for
example almost 67% of their waste stream ends up in landfills.(Scott 25). This
has in fact increased the price of disposal. As Kimball stated "tipping fees" at
landfills, is so often prohibitive(3), and some cannot find landfills to dump
their garbage. It can cost up to $158 to pick a ton of garbage and dispose
it.(Consumer Reports 1994). Beside, these landfills pollute their surroundings
area with lots of hazardous materials and contaminate underground water. To
discover the contam .....
|
|
Cfcs Cause Deterioration Of The Ozone Layer
.... The air on this region is much less dense than in the
troposphere, and it's a lot drier. The stratosphere is the area that contains
the majority of the ozone layer.
Past the stratosphere is the mesosphere which extends to 50 miles above
the planet. The last region is the thermosphere. The thermosphere's outermost
edge is roughly 600 miles above the surface of the earth. Beyond it, the
airless vacuum of space begins.
Oxygen is made up of two oxygen atoms that are bonded together. In the
periodic table it is represented by O2.
Like oxygen, ozone is a gas that is made up of oxygen atoms. However,
a molecule of ozone is .....
|
|
Chimpanzee
.... be playful, gentle monkeys, could suddenly become dangerous killers.
"I knew that some of our chimpanzees, so gentle for the most part, could on
occasion become savage killers, ruthless cannibals, and that they had their own
form of primitive warfare."(Goodall, 1979:594) To try and explain this ruthless
behavior it is necessary to first analyze their social upbringing and unique
lifestyle.
The Chimpanzee society is clearly a male dominated aggressive social unit.
Males are larger than females, they are more openly aggressive, and they fight
more often. (Holloway, 1974:261)
These fights can look extremely fierce and
the v .....
|
|
Chinook Salmon
.... way back to the ocean.
Killing off many of the salmons new generation. Pollution is also a killer of
many Chinook salmon. Pollution caused by sewage, farming, grazing, logging and
mining find it's way into our waters. These harmful substances kill many
species of fish and other marine life. The Chinook salmon is no exception. The
chemicals are dumped into the rivers and streams and eventually these chemicals
find their way to the ocean, polluting and effecting each area they pass through.
The largest contributor to the decline in the Chinook salmon population is the
commercial fishing industry. From a period of 1990-1992 8 .....
|
|
Preserving Our Earth
.... to satisfy the needs of mankind.
But has anyone contemplated the needs of our wildlife? When their homes
are incinerated, where do they run for shelter? Where will wildlife obtain its
food and oxygen if the sources are gone? Not much is done about our destructive
ways, we sit back and let money and greed take power. The solution is just a
whisper away. The preserved areas should remain untouched. Hunting should be
outlawed in these protected lands. If a family is starving and has to resort to
this brutal deed, then restricted areas should be permitted. Proper usage of
trash and recycling receptacles should be readily a .....
|
|
Death Of A Planet
.... harm people with heart disease. Nitrogen oxide is formed when a car
engine gets hot. It contains chemicals that aid in the formation of ground
level ozone as well as acid rain (2 factsheet, OMS-5). Acid rain destroys the
outsides of buildings, statues, etc. Acid rain can also contaminate drinking
water, damage vegetation, and destroy sealife. These two pollutants are two of
the most dangerous pollutants released through car exhaust. If these two
pollutants were cut down just a little bit our planet would be a safer place to
live.
Carbon dioxide is another gas released through exhaust emissions. It
isn't dangerous direct .....
|
|
Deciduous Forests
.... factor for which
species of trees can thrive in an area. The general dominant tree species for
temperate deciduous forests are Beech, Ash, Oak, and in our region also Tulip,
Maple, Birch, and Hickory. Developed forests consist of four layers. The layers
are: canopy, sub canopy, shrub, and ground cover. This layering affect benefits
the diversity of the ecosystem by providing a rich variety of habitats. It is a
result of adaptation and competition for sunlight and shows the continuing
process of succession. The stratification of a forest, by intercepting the some
of the available sunlight at various locations, also creates mic .....
|
|
Deforestation
.... a millennium,
people have benefited from the forests. Forest products range from simple
fuelwood and building poles to sophisticated natural medicines, and from high-
tech wood based manufactures to paper products. Environmental benefits include
water flow control, soil conservation, and atmospheric influences. Brazil's
Amozonia contains half of the world's tropical rain forests. The forests cover a
region 10 times the size of Texas. Only about 10% of Brazil's rain forests have
been cut to date, but cutting goes on at an uncontrollable rate.
Since pre-agricultural times the world's forests have declined one fifth
from 4 to 3 bil .....
|
|
Deforestation Of The Pacific Northwest
.... ten feet.
In 1990, the number of spotted owls dropped to 2000 breeding pairs. The
preservation of any species contributes to the biodiversity of an area. In an
ecosystem, the absence of one species creates unfavorable conditions for the
others. The absence of the spotted owl could have a significant effect on the
North Coast forest ecosystem. In order to send the owl population in the right
direction, the major problem for their decline would have to be remedied – loss
of habitat. This fact combined with the owls' short life expectancy and late age
of breeding only exacerbates the problem. When loggers remove old growth th .....
|
|
Effects Of Deforestation
.... the world's food
supply, threatens many human resources and has profound implications for
biological diversity.
Another negative environmental impact of deforestation is that it causes
climate changes all over the world. As we learned in elementary school, plant
life is essential to life on earth as it produces much of the oxygen that is
required for humans and other organisms to breathe. The massive destruction of
trees negatively effects the quantity and quality of the air we breathe which
has direct repercussions on the quantity and quality of life among both humans
and animals alike. With this reduced amount of vital pl .....
|
|
El Nino
.... rises in the west, making upwelling easier and water colder. Air
pressures at sea level in the South Pacific seesaw back and forth between two
distinct patterns. In the high index phase, also called "Southern Oscillation",
pressure is higher near and to the east of Tahiti than farther to the west near
Darwin. The east-west pressure difference along the equator causes the surface
air to flow westward. When the atmosphere switches into the low index phase,
barometers rise in the west and fall in the east, signaling a reduction, or even
a reversal the pressure difference between Darwin and Tahiti. The flattening of
the .....
|
|
|
