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