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