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Eleventh Grade (Grade 11) Biogeochemical Cycles Questions

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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 11 Biogeochemical Cycles
What is the best definition of global warming?
  1. it is when the earth is warm on all sides
  2. an increase in the average temperature worldwide caused by the greenhouse effect.
  3. when people around the world are feeling warm all over
  4. is it when the earth is warm because of many fires in the jungle
Grade 11 Biogeochemical Cycles
Which is an example of the direct use of fossil fuels?
  1. a nuclear reactor
  2. an oil-fired furnace
  3. a wind generator
  4. a wood-burning stove
Grade 11 Biogeochemical Cycles
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