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environmental science
  • 1. a process by which carbon is cycled through the atmosphere
A) carbon
B) decomposer
C) cellular respiration
D) consumer
E) carbon cycle
  • 2. breaking down food to yield energy
A) consumer
B) food web
C) decomposer
D) cellular respiration
E) food chain
  • 3. a final and stable community
A) secondary succession
B) producer
C) primary succession
D) climax community
E) Trophic level
  • 4. organisms that get their energy by eating other organisms
A) food chain
B) photosynthesis
C) producer
D) decomposer
E) consumer
  • 5. dead organisms
A) primary succession
B) consumer
C) food web
D) decomposer
E) producer
  • 6. a gradual process of change and replacement types of species in a community
A) photosynthesis
B) pioneer species
C) secondary succession
D) nitrogen cycle
E) Ecological Succession
  • 7. a sequence in which energy is transferred from one organism to the next
A) food cycle
B) food chain
C) decompser
D) consumer
E) food web
  • 8. many feeding relationships that are possible in an ecosystem
A) food cycle
B) food structure
C) food chain
D) food link
E) food web
  • 9. A process in which nitrogen is cycled through the atmosphere and through land and also organisms
A) nitrogen producer
B) oxygen cycle
C) phosphorus cycle
D) nitrogen
E) nitrogen cycle
  • 10. the movement of phosphorus from the environment to organisms and back to the environment
A) pioneer species
B) trophic level
C) phosphorus cycle
D) primary succession
E) nitrogen cycle
  • 11. energy from the sun enters the ecosystem when a plant uses that sunlight to make sugar molecules
A) consumer
B) A and B only
C) none of the above
D) producer
E) photosynthesis
  • 12. the first organisms to colonize any newly available area and begin ecological succession
A) trophic level
B) none of the above
C) primary succession
D) pioneer species
E) B and D only
  • 13. a type of succession that occurs on a surface where no ecosystem existed before
A) third succession
B) none of the above
C) A and D only
D) secondary succession
E) primary succession
  • 14. an organism that makes it's own food
A) none of the above
B) producer
C) photosynthesis
D) C and D only
E) food chain
  • 15. more common type occurs on a surface where an ecosystem has existed before
A) second succession
B) none of the above
C) primary succession
D) third succession
E) secondary succession
  • 16. each step in the transfer of energy through a food chain or food web in an ecosystem
A) Trophic level
B) consumer
C) producer
D) cellular respiration
E) none of the above
  • 17. organisms that can fix atmospheric nitrogen into chemical compounds are a few bacteria species
A) Nitrogen fixing bacteria
B) nitrogen fixing
C) fixing bacteria
D) none of the above
E) nitrogen
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