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What is an ecosystem? correct answers a location on earth that includes interacting living (biotic) and non-living (abiotic) components. What percentage of energy is lost as trophic level increases? correct answers only 10% of energy is transferred from one trophic level to another. What is t...

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  • September 25, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
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  • what is an ecosystem

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APES Exam Review || with 100% Errorless Answers.
What is an ecosystem? correct answers a location on earth that includes interacting living (biotic)
and non-living (abiotic) components.

What percentage of energy is lost as trophic level increases? correct answers only 10% of energy
is transferred from one trophic level to another.

What is the Tragedy of the Commons? correct answers The destruction of a natural habitat
known as a common that was overgrazed by sheep

The addition of a limiting nutrient to an ecosystem may lead to an algal bloom. What effect will
this algal bloom have on the oxygen content of the water? correct answers The algae bloom will
cause the oxygen content of the water to decrease, leading to hypoxic conditions

What has the largest impact on the resilience of an ecosystem? correct answers The amount of
genetic biodiversity of the ecosystem.

What process of selection can be controlled most directly by humans? correct answers Artificial
selection

what are the primary air pollutants? correct answers Carbon Monoxide, Nitrogen Dioxide, Sulfur
Dioxide, Lead

What are the effects of acid deposition? correct answers Lowers PH of water, Decreases species
diversity of aquatic organisms, damages statues and buildings, mobilizing metals that are found
in the water

Why do we have a seasonal fluctuation in carbon dioxide concentration? correct answers
Photosynthesis

Name the 6 primary pollutants regulated by the Clean Air Act correct answers sulfur dioxide,
nitrogen oxide, carbon monoxide, particulate matter, tropospheric ozone, lead

Name two anthropogenic greenhouse gases correct answers burning fossil fuels leading to higher
carbon dioxide concentrations, farming and forestry, cement manufacture, aerosols (CFCs)

In which atmospheric region is Ozone (O3) harmful? correct answers troposphere

Why are CFCs so harmful? correct answers thing out the stratospheric ozone layer which can
increase the UV-B radiation and produce a major hole in the ozone layer

When sunlight combines with NOx, Sox, and VOC what is the result? correct answers Ozone
(O3)

, Name 3 consequences of warming temperatures to the environment? correct answers rising of
sea levels, melting of polar ice caps, melting of permafrost, storm intensity increase, human
health affected by heat, crop damage

What is cited s the causative factor for acid deposition? correct answers Sulfur Dioxide

What is a point source? correct answers pollution that comes from a distinct location

What does the Clean Water Act say? correct answers Legislation that was created in 1948 and
then hugely expanded in 1972. It sets maximum permissible amounts of water pollutants that can
be discharged into waterways. Aim: to make surface waters swimmable and fishable

what causes cultural eutrophication? correct answers phosphates, nitrates, and detergents

What is BOD (biochemical oxygen demand)? correct answers amount of oxygen required for the
bacterial decomposition of organic matter in water

What types of water can acid drainage runoff pollute? correct answers surface and underground
water

What are the three major fossil fuels? correct answers Oil, coal and natural gas

Which fossil fuel is most commonly used in the U.S.? correct answers Coal

What are the disadvantages of using coal? correct answers Increase in SOx, carbon, and other air
pollutants

What is petroleum made of? correct answers fluid of hydrocarbons, water, and sulfer

What is liquid petroleum that is removed from the ground called? correct answers Crude oil

Name two oil spills? correct answers BP Deepwater Horizon and the Exxon Valdez

What is Natural Gas? correct answers it is mostly methane, ethane and propane and butane

What are the two largest uses of methane in the U.S.? correct answers Electricity generation and
industrial processes

Which is the cleanest fossil fuel? correct answers Natural Gas is the cleanest, but it has its
disadvantages

Why is natural gas sometimes dangerous? correct answers There is one instance in where people
attempt to retrieve natual gas by a process called fracking which is very dangerous.

What is a nonpoint source? correct answers Areas where the sources of the pollution cannot be
identified and come from many sources.

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