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