Ozone Depletion
.... is the damage they cause
to living things on Earth. When the ozone depletes, it causes more ultraviolet
(UV) rays to hit the Earth's surface than are healthy (Singer and Crandall npg).
UV rays affect the DNA of every living cell, altering the protein make-up of
that cell (Goldfarb 288). Most importantly it affects "microscopic
photoplankton" which rest at the bottom of the food chain, placing us in extreme
danger (Goldfarb 288). Henry Lee, leading researcher on ozone depletion for the
Environmental Protection Agency (EPA), says that UV rays will only have a slight
effect on oceans, though. He says the problem lies on the fact .....
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Plastic Not Paper
.... to
waste considering that plastic bags are so much more practical then paper. You
can use them for lots of other things. You can take on trips to the grocery
store, your can protect dry clothing from wet towels in an exercise bag. You
can line your house hold waste basket with them, you tote dry shoes to work on
rainy days. Hold plastic, aluminum and glass for recycling. Plastic bags are
also very practical to carry. You can carry 5 compared with 2 paper bags.
Plastic bags also hold just as many items as paper. This is also very practical
because you can get your groceries out of your car a lot faster, after all
grocery shopp .....
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"An Ecosystem's Disturbance By A Pollutant
.... entire population. Non-target effects are those that
effects a significant number of individuals and spreads over to other
individuals, such is the case when crop dusters spread herbicides, insecticides.
Next we look at population damage by a pollutant, which in turn has a
detrimental effect on the ecosystem in several ways. First, by the killing of an
entire population by a pollutant, it offsets the food chain and potentially
kills off other species that depended on that organism for food. Such is the
case when a keystone species is killed. If predators were the dominant species
high on the food chain, the organisms that the pred .....
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The China Syndrome
.... again. When Jack saw what they were doing he grabbed the security officer's
gun and forced everyone out of the control room. After he locked the door he
lowered the power down to 75% so the pumps wouldn't break.
Jack agreed to have a one on one interview with Kimberly so the public
would be warned. While the camera crew was on their way to do the live interview
so was the S.W.A.T. team to get Jack out of the room. Also the people running
the plant and who didn't believe Jack were up to something too. The operators
were rerunning the wires to make a false accident that would distract Jack. The
distraction would make it easier fo .....
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Ehrlich's Population Bomb
.... to lead to the conclusion that in 90 years the population could be well
over the earths carrying capacity. In third world countries where population
control is rarely used population, pollution, and scarcity are becoming ever
increasing problems. Roughly 40% of the population in third world countries are
children 15 years or older. Ehrlich explains that if population growth
continues at this rate older generations will find themselves without adequate
food and medicine. Near the end of the chapter Ehrlich explains the cause of
the massive increase in population growth; as he explains that science and
medicine have d .....
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Fusion
.... and when they meld, release an enormous amount of energy. This is
fusion. There is currently three known variations of fusion: the proton-proton
reaction (Figure 1.1), the carbon cycle (Figure 1.2), and the triple-alpha
process (Figure 1.3). In the proton-proton reaction, a proton (the positively
charged nucleus of a hydrogen atom) is forced so close to another proton (within
a tenth of a trillionth of an inch) that a short range nuclear force known as
the strong force takes over and forces the two protons to bond together (1). One
proton then decays into a neutron (a particle with the same mass as a proton,
but w .....
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The Potential Effects Of A Depleted Ozone Layer - Detrykowski
.... the sun's invisible and dangerous ultraviolet rays " ( Jones, 1992,
p.36 ). Such a scenario would drastically alter society and the environment.
Ozone depletion has been described as "potential catastrophe " and " a planetary
time - bomb " ( Way, 1988, p.9 ). The four main areas affected by a depleted
ozone layer and thus by the corresponding increase in harmful ultraviolet
radiation are agriculture, wildlife, the environment, and human health. A
depleted ozone layer has a profoundly negative and potentially devastating
effect on humanity and its surroundings.
From an agricultural perspective, a diminished ozone layer pose .....
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Predators And Ecosystem Management
.... growth of the sea otters population we observed the change from otter-
free to otter-dominated.
This article relates to many aspects of our textbook. On page 89 in
chapter 5 the text explains what an ecosystem is, defined by the book, it's a
community of species interacting with one another where there is a non-living
environment. In this case the otter and kelp-forests ecosystems a coastal
ecosystem. As mentioned in the book, the food chain is involved in the sequence
of events with the organism that are the source of the food. In a survey of
coastal habitats in many areas of the North Pacific Ocean have revealed that .....
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Privately Owned Gasoline Powered Vehicles Should Be Limited
.... When the gas is burned in the engine of the car, several
byproducts result. These exhausts include hydrocarbons and oxides of three
elements: Carbon, nitrogen, and sulfur(Emissions). Tiny amounts of poisonous
trace elements such as lead, cadmium, and nickel also are present. Everything
contained in the exhaust affects the environment intensely. Auto engine exhaust
contributes about 50% of today's atmospheric pollution, and in highly populated
and industrialized cities, air pollution consists of up to 80% car exhaust.
Because of all of the gasoline powered cars on the road, the earth's
outermost protective shell, the .....
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Purple Loosestrife
.... purple loosestrife thrived in the
environmental conditions and by 1880 was rapidly spreading north and west
through the canal and marine routes. Purple loosestrife stands also increased
due to the importation of seeds and root stalks by horticulturists. It was
introduced to many communities as an herb, an ornamental garden flower and as a
desirable honey plant.
One of the earliest reported studies of purple loosestrife being a problem in
Canada was documented by Mr. Louis - Marie, in 1944. He stated that purple
loosestrife was invading the St. Lawrence flood plain pastures between Montreal
and Quebec. At that time Louis .....
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Radon
.... that are in the building.(6)
Health Risk
The Surgeon General's office reports that indoor radon gas is a national
health problem. This gas causes thousands of deaths every year.(7) These
deaths are a result of lung cancer, which is caused by the radioactive particles
that make up the gas.(8) The likelihood of getting lung cancer from radon
depends on: the concentration that you are exposed to, the amount of time that
you are exposed, and whether you smoke or not. The radioactive particles are
inhaled when we breathe, and become trapped in the lungs. Once in the lungs
they release small amounts of energy that can damage the .....
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The Rain Forest
.... ten million hectares. Tropical
rainforests receive 160 to 400 inches of rain each year. Although these dense,
damp forests cover just 5 percent of the Earth's surface, they can provide homes
for between 50 and 90 percent of the Earth's plants and animals
(http://www.davesite.com/rainforests/review1.shtml).
Tropical rainforests consist of three distinct layers referred to as the
forest floor, the understory, and the canopy. The forest floor contains very
poor soil which is mainly due to the trees not allowing for ample sunlight to
reach the ground. Because only one to two percent of the light at the top of
the forest's cano .....
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