environmental science final
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 the bird to use?
10%
What essential characteristic does a good experiment have?
A single variable is tested and A control is used.
Which of the following describes soil and temperature in an ecosystem?
Abiotic factors
Which of the following is not a biotic factor in an ecosystem?
Air
Which organism is likely to be in the bottom trophic level of a food chain?
Algae
A hybrid car uses
An efficient gasoline engine and an electric motor
What part of Earth encompasses all areas where organisms can obtain the energy they need?
Biosphere
Which of the following is the most geologically active region on the surface of Earth?
Boundaries between tectonic plates
Which of the following situations best describes the use of a renewable resource?
Building wooden furniture
Geothermal heat pumps can heat homes by
Circulating fluid underground to absorb heat from the Earth
The process of two species changing genetically in response to long-term interactions with each other is
Coevolution
Ocean water _________ than fresh water.
Contains more salts
A group that does not receive the experimental treatment in an experiment is the
Control group
Electric generators work by
Converting mechanical energy into electrical energy
The energy in fossil fuels is often converted into
Electrical energy
The percentage of energy put into a system that does useful work is
Energy efficiency
Using scientific information from chemistry and biology to devise a plan to clean up a lake and make it healthy again describes
Environmental science
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?
Fire
What term is used to refer to the many feeding relationships that are possible in an ecosystem?
Food web
Which of the following are photosynthetic organisms?
Freshwater algae
Which of the following is an example of secondary succession?
Growth of plants after a forest is destroyed by fire
Gangue minerals
Have no commercial value
Which kind of organism obtains energy only from producers?
Herbivores
The most energy-efficient vehicles available today are
Hybrid cars
Which of the following includes all of the water on or near the Earth's surface?
Hydrosphere
Where is most of the freshwater on Earth located?
In ice caps and glaciers
Most of the energy consumed in the United States is used for
Industrial purposes
Which of the following describes the depletion of a renewable resource?
Intensive cultivation of farmland that exhausts the soil of nutrients
Which of the following is an advantage of nuclear energy?
It does not produce air pollution.
The distance north or south of the equator, as measured in degrees, is called
Latitude
All of these fields of study contribute to environmental science except
Linguistics
The molten rock that is found in the upper mantle is
Magma
The Richter scale best describes the
Magnitude of an earthquake
Which of the following best describes a population?
Members of the same species living in the same place at the same time
Which gas makes up 78% of our atmosphere but can be used by plants only when transformed by bacteria first?
Nitrogen
Which step in the experimental method are scientists conducting when they photograph birds in flight?
Observing
Which of the following are minerals that contain valuable substances?
Ore minerals
The organisms most likely to belong to the same species are
People at a football game
The community of a pond is made up of all the
Populations of fish, insects, and other living organisms.
In order for evolution to occur in a population, individuals with a trait that is "naturally selected for" must
Reproduce
Reclamation is the process of
Returning land to its original or better condition after mining
The ozone layer is located in the
Stratosphere
Where would an ecologist be least likely to go to study primary succession?
The Amazon Rain Forest
Climate in a region is
The long-term, prevailing atmospheric conditions
The energy in most ecosystems comes from
The sun
In an experiment, the factor of interest is called the
Variable
Most infectious diseases are transmitted through
Water
Large-scale atmospheric phenomena caused by air that is constantly in motion is known as
Weather
Renewable energy is energy from sources that
are constantly being formed
An endangered species is
in danger of extinction