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Biogeochemical Cycles Questions - All Grades

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Grade 10 Biogeochemical Cycles
Grade 9 Biogeochemical Cycles
Which gas is not considered a greenhouse gas?
  1. carbon dioxide
  2. methane
  3. oxygen
  4. water vapor
Grade 10 Biogeochemical Cycles
Grade 10 Biogeochemical Cycles
How do plants get nitrogen if not from the atmosphere?
  1. nitrogen fixation
  2. consumption
  3. synthesis
  4. denitrification
Grade 10 Biogeochemical Cycles
How much water enters the hydrologic cycle?
  1. about 10% of ocean water
  2. 60% of pond water
  3. over 80% of evaporated water
  4. 25% of Earth's water
Grade 10 Biogeochemical Cycles
What draws water back to Earth?
  1. rain
  2. wind
  3. magnetism
  4. gravity
Grade 11 Biogeochemical Cycles
Grade 9 Biogeochemical Cycles
Which gas is not an anthropogenic global warming gas?
  1. carbon dioxide
  2. halocarbon
  3. hydrogen
  4. methane
  5. ozone
Grade 10 Biogeochemical Cycles
What does acid rain do?
  1. Creates winds
  2. Increases productivity of plants
  3. Blocks solar radiation
  4. Lowers pH of soils, lakes, and rivers
Grade 10 Biogeochemical Cycles
College Biogeochemical Cycles
Why is ozone important to life on Earth?
  1. Is toxic to all forms of life
  2. Can be used in place of oxygen
  3. Blocks much ultraviolet radiation
  4. Provides energy to some basic forms of life
  5. Acts as a disinfectant
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