Environmental science

Coral reefs are intricately shaped rocklike structures that are formed as a result of

A - the secretion of calcium carbonate by tiny marine animals.

Why doesn't photosynthesis occur in deep ocean water?

A - there is no sunlight

Which of the following is an advantage of using fossil fuels for energy?

A - versatility in their uses.

If an insect eats a plant and a bird eats the insect, about how much energy from the plant is stored in the insect for a bird to use?

B - 10 percent

A hybrid car uses

B - an efficient gasoline engine and an electric motor.

Which of the following is the most geologically active region on the surface of Earth?

B - boundaries between tectonic platea

Which of the following situations best describes the use of a renewable resource?

B - building wooden furniture

Geothermal heat pumps can hear homes by

B - circulating fluid underground to absorb heat from Earth.

Swamps are commonly found on

B - flat, poorly drained land

Most of the energy consumed in the United States is used for

B - industrial purposes

The distance north or south of the equator, as measured in degrees, is called

B - latitude

Most scientists classify organisms into

B - six kingdoms

The energy in most ecosystems comes from

B - sun

What is the main reason why fewer nuclear power plants are being built today compared to 40 years ago?

C - Nuclear fusion plants are being built instead.

Which organism is likely to be in the bottom trophic level of a food chain?

C - algae

Biomes

C - are aurally described their vegetation

In the ___ zone, the water is cool and dark.

C - benthic

Tropical rain forests are threatened by

C - deforestation and the trade if rain forest plants and animals.

The most energy-efficient vehicles available today are

C - hybrid cars.

What are the two main types of freshwater wetlands?

C - marshes and swamps.

Estuaries are very productive ecosystems because they receive fresh nutrients from

C - rivers and oceans

Which ecosystem had the highest level of salinity?

C - salt marsh

Coal is formed when

C - swamplands are buried by sediment. The added weight creates heat and pressure that converts the plants to coal.

Which if the following is an example of cogeneration?

C - using the waster heat from a furnace to power a steam turbine.

What term is used to refer to the many feeding relationships that are possible in an ecosystem?

C- food web

During the _____ period(s), humans altered their habitats.

D - All of the above

Hydrogen can be used as a fuel source in the future because it

D - All of the above

The energy in fossil fuels is often converted into

D - Electricity

The types of organism found in a pond or lake depend on

D - all of the above

The main factor that determines what type of plants grow in a biome is

D - both a and b

Which if the following is a major source of biomass fuel in developing countries?

D - both a and b.

What essential characteristic does a good experiment have?

D - both b and c

Ocean water ____ than fresh water.

D - contains more salrs

Which of the following is NOT a main use of fuel?

D - cooking

The percentage of energy put into a system that does useful work is

D - energy efficiency

Solar energy, or energy from the sun, is contained in

D - fossil fiels

Oil and natural gas result from

D - the decay of tiny marine organisms that accumulated on the ocean floor millions of years ago.

In an experiment, the factor of interest is called the

D - variable

All of the fields of study contribute to environmental science except

Linguistics

Storage sites for nuclear wastes

A - should be located only in areas that are extremely geologically stable

Which if the following describes soil and temperature in an ecosystem?

A - abiotic factors

Renewable energy comes from sources that

A - are constantly being formed.

Habitat loss, soil erosion, and air pollution are disadvantages of which renewable energy source?

A - biomass fuel

The group that does not receive the experimental treatment in an experiment is the

A - control group

What kind of natural disaster helps some forest communities by allowing some trees to release their seeds, by clearing away deadwood, and by encouraging new growth?

A - fire

Which if the following statements about hydrogen as a fuel source is correct?

A - hydrogen can be burned as a fuel or used to produce electricity chemically.

A fuel's stability is dependent on all of he following factors, except

A - magnetism

Which organism produces most of the food in an aquatic ecosystem?

A - phytoplanyon

Which of the following are producers of oxygen?

A - plants

The majority of marine organisms are found in

A - shallow, coastal waters