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15 questions
Why do living things need nitrogen?
To get energy
To make amino acids
To make proteins
To make proteins AND amino acids
What cycle are fossil fuels part of ?
carbon
oxygen
nitrogen
phosphorus
What is the largest reservoir for nitrogen?
the ocean
rocks and minerals
the atmosphere
bacteria
Photosynthesis is an important part of the ______ cycle
Carbon
Water
Phosphorus
Nitrogen
Decomposition is part of all cycles except _______
the carbon cycle
the nitrogen cycle
the water cycle
the phosphorus cycle
Carbon dioxide is _______________
a greenhouse gas
released from rocks through weathering
used as a fertilizer
what plants make
Snow, sleet, ice, hail, and rain are examples of _____
evaporation
condensation
precipitation
ground water
What is the largest reservoir for water?
the ocean
rocks and minerals
the atmosphere
glaciers
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