Biogeochemical Cycles Worksheet
Explore the fundamental processes of biogeochemical cycles, including the carbon, nitrogen, and water cycles, and their importance in Earth's ecosystems.
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Biogeochemical Cycles Worksheet
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Read each question carefully and answer to the best of your ability. Refer to your knowledge of biogeochemical cycles.
1. Which of the following processes releases carbon dioxide into the atmosphere?
Photosynthesis
Respiration
Nitrogen fixation
Condensation
2. What is the primary role of decomposers in biogeochemical cycles?
To produce oxygen
To convert light energy into chemical energy
To return nutrients to the soil
To absorb carbon dioxide from the atmosphere
1. The process of converting atmospheric nitrogen into ammonia or other nitrogen compounds is called .
2. Water vapor in the atmosphere cools and changes back into liquid water droplets, forming clouds in a process called .
3. Plants absorb carbon dioxide from the atmosphere during .
1. The burning of fossil fuels contributes to an increase in atmospheric carbon dioxide.
True
False
2. Denitrification is the process by which bacteria convert nitrates back into atmospheric nitrogen gas.
True
False
1. Briefly explain the difference between the long-term and short-term carbon cycles.
2. Describe the role of bacteria in the nitrogen cycle.
Refer to the diagram below to answer the following questions.
1. Identify two processes in the diagram that transfer carbon from the atmosphere to living organisms.
2. According to the diagram, what is one way that water returns to the atmosphere from the Earth's surface?
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