Environmental Science B |100% Correct LATEST UPDATED 2025/2026| Exam
WITH COMPLETE Questions And VERIFIED SOLUTIONS | GRADED AT A+ SCORE
1.which item is NOT part of the carbon cycle - ANSWER carbon found within limestone rocks
2.plants play a crucial role in the carbon cycle because they - ANSWER allow carbon to enter an
ecosystem through photosynthesis
3.much of the carbon dioxide produced by green plants is NOT excreted as metabolic waste because it -
ANSWER can be used for photosynthesis
4.carbon dioxide containing carbon-14 is introduced into a balanced aquarium ecosystem. after several
weeks, carbon-14 will MOST likely be present in - ANSWER both the plants and animals
5.how much energy would be available to the organisms in level C - ANSWER all of the energy in level A,
minus the energy in level B
6.the Xs in the diagram represent the amount of energy that was most likely - ANSWER lost as heat to
the environment??
7.in an ecosystem, what happens to the atoms of certain chemical elements such as carbon, oxygen, and
nitrogen? - ANSWER ?? they move into and out of living systems
8.which statement describes a role of bacteria in an ecosystem - ANSWER they recycle chemicals from
dead organisms
9.in an ecosystem, nutrients would be recycled if they were transferred directly from herbivores to
carnivores to - ANSWER omnivores??? (decomposers)
10.some homeowners mow their lawns during the summer, collect the grass clippings and dispose of
them in a landfill. instead of taking the clippings to a landfill, a more ecologically sound procedure would
be to - ANSWER leave the clippings to decompose in the lawn to form materials that enrich the soil
,11.how did the EPA help impose the clean air act? - ANSWER The EPA did all of these things
12.the clean water act attempts to maintain the ________ integrity of the U.S. waters - ANSWER
biological, chemical, and physical
13.which regulation requires producers of hazardous wastes to document how their wastes are handled
- ANSWER the resource conservation and recovery act.
14.which of the following is responsible for the concern of the international public health? - ANSWER
world health organization
15.the _______ is charged with advancing the national, economic, and energy security of the united
states - ANSWER department of energy
16.which method of protecting members of an endangered species is MOST environmentally sound? -
ANSWER protecting the habitats where these animals live from human development
17.which of the following would NOT be illegal under the endangered species act - ANSWER having a
permit to capture and conduct research with endangered species
18.In the Coachella Valley in California, much of the desert has been converted into golf courses, housing
developments, and hotels. The habitat of the Coachella Valley fringe-toed lizard is rapidly being lost. This
lizard is adapted for life on fine, windblown sand. Environmentalists want to save the lizard, and
developers want to continue construction. If this lizard were to become endangered, what provision
would create a recovery plan for this species? - ANSWER Provision 4- create a recovery plan for every
endangered species
19.Animals listed as endangered or threatened cannot be _____ in the united states - ANSWER collected,
hunted, and killed
20.because of the endangered species act, the sale of protected animals or plants is - ANSWER
punishable by a substantial fine
,21.all of the following would strengthen the endangered species act EXCEPT - ANSWER making the
protection of endangered species on private land voluntary
22.according to the world health organization, which of the following plays the MOST important role in
causing or promoting cancer? - ANSWER cigarette smoke
23.a human activity that could significantly DECREASE the amount of carbon dioxide in the air is -
ANSWER preserving and expanding forest habitats that shelter wildlife
24.the population change in a particular year can be calculated by - ANSWER (births + immigration) -
(deaths + emigration)
25.which of the following is NOT one of the factors that play a role in population growth rate? - ANSWER
demography
26.which of the following could describe a population that is decreasing in size? - ANSWER the death
rate is becoming higher than the birthrate
27.which are two ways a population can increase in size? - ANSWER increased birth rate and immigration
28.which occurrence most likely led to the other three? - ANSWER human population growth reached
6.9 billion in 2010 and it continues to increase
29.the human population experienced exponential growth just after - ANSWER the industrial revolution
30.social factors affecting birth and fertility rates include - ANSWER all of these answers
31educating women worldwide has lowered birthrates partly because - ANSWER educated women may
learn family-planning techniques
, which factors contributed most to the exponential of the human population - ANSWER more food, better
hygiene
countries with high growth rates usually have an age structure that has - ANSWER more younger people
than older people
after the industrial revolution, what two useful indicators increased the overall health in a country or
region? - ANSWER life expectancy and infant mortality rate
if over a long period of time, each pair of adults in a population had only two offspring and the offspring
lived to reproduce, the population would - ANSWER remain the same.
carrying capacity refers to - ANSWER the maximum size of population the environment will support
carrying capacity is determined by - ANSWER all of these answers
which statement identifies the most likely reason that the carrying capacity of the area to support deer
decreased between 1925 and 1930 - ANSWER the deer population became too large
the increased greenhouse gases originate from - ANSWER all of these answers are correct
which of the following would NOT be a consequence of a rise in global temperature - ANSWER increased
polar ice mass??? increased frequency of major storms
which environmental factor has been most recently affected by these changed in carbon dioxide level -
ANSWER atmospheric temperature??
most scientists recommend reducing carbon dioxide emissions. less carbon dioxide in the atmosphere
would be expected to - ANSWER reduce the rate of global warming
car exhaust has been blamed for increasing the amount of carbon dioxide in the air. some scientists
believe this additional carbon dioxide in the air may cause - ANSWER global warming
WITH COMPLETE Questions And VERIFIED SOLUTIONS | GRADED AT A+ SCORE
1.which item is NOT part of the carbon cycle - ANSWER carbon found within limestone rocks
2.plants play a crucial role in the carbon cycle because they - ANSWER allow carbon to enter an
ecosystem through photosynthesis
3.much of the carbon dioxide produced by green plants is NOT excreted as metabolic waste because it -
ANSWER can be used for photosynthesis
4.carbon dioxide containing carbon-14 is introduced into a balanced aquarium ecosystem. after several
weeks, carbon-14 will MOST likely be present in - ANSWER both the plants and animals
5.how much energy would be available to the organisms in level C - ANSWER all of the energy in level A,
minus the energy in level B
6.the Xs in the diagram represent the amount of energy that was most likely - ANSWER lost as heat to
the environment??
7.in an ecosystem, what happens to the atoms of certain chemical elements such as carbon, oxygen, and
nitrogen? - ANSWER ?? they move into and out of living systems
8.which statement describes a role of bacteria in an ecosystem - ANSWER they recycle chemicals from
dead organisms
9.in an ecosystem, nutrients would be recycled if they were transferred directly from herbivores to
carnivores to - ANSWER omnivores??? (decomposers)
10.some homeowners mow their lawns during the summer, collect the grass clippings and dispose of
them in a landfill. instead of taking the clippings to a landfill, a more ecologically sound procedure would
be to - ANSWER leave the clippings to decompose in the lawn to form materials that enrich the soil
,11.how did the EPA help impose the clean air act? - ANSWER The EPA did all of these things
12.the clean water act attempts to maintain the ________ integrity of the U.S. waters - ANSWER
biological, chemical, and physical
13.which regulation requires producers of hazardous wastes to document how their wastes are handled
- ANSWER the resource conservation and recovery act.
14.which of the following is responsible for the concern of the international public health? - ANSWER
world health organization
15.the _______ is charged with advancing the national, economic, and energy security of the united
states - ANSWER department of energy
16.which method of protecting members of an endangered species is MOST environmentally sound? -
ANSWER protecting the habitats where these animals live from human development
17.which of the following would NOT be illegal under the endangered species act - ANSWER having a
permit to capture and conduct research with endangered species
18.In the Coachella Valley in California, much of the desert has been converted into golf courses, housing
developments, and hotels. The habitat of the Coachella Valley fringe-toed lizard is rapidly being lost. This
lizard is adapted for life on fine, windblown sand. Environmentalists want to save the lizard, and
developers want to continue construction. If this lizard were to become endangered, what provision
would create a recovery plan for this species? - ANSWER Provision 4- create a recovery plan for every
endangered species
19.Animals listed as endangered or threatened cannot be _____ in the united states - ANSWER collected,
hunted, and killed
20.because of the endangered species act, the sale of protected animals or plants is - ANSWER
punishable by a substantial fine
,21.all of the following would strengthen the endangered species act EXCEPT - ANSWER making the
protection of endangered species on private land voluntary
22.according to the world health organization, which of the following plays the MOST important role in
causing or promoting cancer? - ANSWER cigarette smoke
23.a human activity that could significantly DECREASE the amount of carbon dioxide in the air is -
ANSWER preserving and expanding forest habitats that shelter wildlife
24.the population change in a particular year can be calculated by - ANSWER (births + immigration) -
(deaths + emigration)
25.which of the following is NOT one of the factors that play a role in population growth rate? - ANSWER
demography
26.which of the following could describe a population that is decreasing in size? - ANSWER the death
rate is becoming higher than the birthrate
27.which are two ways a population can increase in size? - ANSWER increased birth rate and immigration
28.which occurrence most likely led to the other three? - ANSWER human population growth reached
6.9 billion in 2010 and it continues to increase
29.the human population experienced exponential growth just after - ANSWER the industrial revolution
30.social factors affecting birth and fertility rates include - ANSWER all of these answers
31educating women worldwide has lowered birthrates partly because - ANSWER educated women may
learn family-planning techniques
, which factors contributed most to the exponential of the human population - ANSWER more food, better
hygiene
countries with high growth rates usually have an age structure that has - ANSWER more younger people
than older people
after the industrial revolution, what two useful indicators increased the overall health in a country or
region? - ANSWER life expectancy and infant mortality rate
if over a long period of time, each pair of adults in a population had only two offspring and the offspring
lived to reproduce, the population would - ANSWER remain the same.
carrying capacity refers to - ANSWER the maximum size of population the environment will support
carrying capacity is determined by - ANSWER all of these answers
which statement identifies the most likely reason that the carrying capacity of the area to support deer
decreased between 1925 and 1930 - ANSWER the deer population became too large
the increased greenhouse gases originate from - ANSWER all of these answers are correct
which of the following would NOT be a consequence of a rise in global temperature - ANSWER increased
polar ice mass??? increased frequency of major storms
which environmental factor has been most recently affected by these changed in carbon dioxide level -
ANSWER atmospheric temperature??
most scientists recommend reducing carbon dioxide emissions. less carbon dioxide in the atmosphere
would be expected to - ANSWER reduce the rate of global warming
car exhaust has been blamed for increasing the amount of carbon dioxide in the air. some scientists
believe this additional carbon dioxide in the air may cause - ANSWER global warming
