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Biogeochemical Cycles Questions - All Grades

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Grade 11 Biogeochemical Cycles
Grade 11 Biogeochemical Cycles
Which reservoir contains the most carbon?
  1. atmosphnere
  2. deep oceans
  3. vegetation
  4. sediments
Grade 7 Biogeochemical Cycles
Lightning, legumes and bacteria are a part of which cycle?
  1. water cycle
  2. nitrogen cycle
  3. carbon cycle
  4. phosphorus cycle
Grade 11 Biogeochemical Cycles
What is the role of nitrogen fixing bacteria in the nitrogen cycle?
  1. They create acid rain.
  2. They cause algal blooms.
  3. They make nitrogen into a more useful form.
  4. They move water through the environment.
Grade 9 Biogeochemical Cycles
What is the recycling of chemical elements throughout an ecosystem called?
  1. Energy
  2. Phosphorous Cycle
  3. Biogeochemical Cycle
  4. Tropic Level
Grade 9 Biogeochemical Cycles
The biogeochemical cycles does not include                              .
  1. Human Activity
  2. Geological Processes
  3. Evaporation Cycle
  4. Chemical & Physical Processes
Grade 9 Biogeochemical Cycles
The two main processes of the oxygen-carbon cycle are                                        .
  1. Transpiration and photosynthesis
  2. Photosynthesis and Carbonation
  3. Cellular Respiration and Transpiration
  4. Cellular Respiration and Photosynthesis
Grade 10 Biogeochemical Cycles
Nutrients move through an ecosystem in                      .
  1. energy pyramids
  2. ecological pyramids
  3. biogeochemical cycles
  4. water cycle
Grade 9 Biogeochemical Cycles
What plays an important role in the nitrogen cycle?
  1. Carbon
  2. Water
  3. Bacteria
  4. Photosynthesis
Grade 7 Biogeochemical Cycles
Grade 10 Biogeochemical Cycles
Grade 10 Biogeochemical Cycles
Which of the following process(es) is/are part of the carbon cycle in an ecosystem?
  1. photosynthesis
  2. microbial decomposition
  3. formation of fossil fuels
  4. combustion to power cars and heat homes
Grade 10 Biogeochemical Cycles
Grade 7 Biogeochemical Cycles
Which of the following is NOT a way that carbon in dead organisms is returned to the carbon cycle?
  1. by becoming fossil fuel
  2. through combustion
  3. through decomposition
  4. through photosynthesis
Grade 9 Biogeochemical Cycles
Which biogeochemical cycle is pictured below?
Carbon Cycle With Text Labels
  1. carbon cycle
  2. water cycle
  3. nitrogen cycle
  4. phosphorus cycle
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