What is the primary source of carbon that can be used by plants?
A - Carbon dioxide in the atmosphere
B - Dead organic material
C - Calcium carbonate
D - Inorganic carbon in the soil
E - Carbon dioxide dissolved in water
Answer: A - Carbon dioxide in the atmosphere
The primary source of carbon for plants is in the atmosphere because carbon dioxide is a gas that can move freely through the air and water.
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Biochemical Cycles
- What is the largest pool of carbon on the planet?
- Which of the following is the best explanation for why we study the carbon cycle on a global scale and not as much in specific local ecosystems?
- Which of the following is not a way in which carbon can exit living plant material in the carbon cycle?
- Which of the following processes takes carbon out of the short-term carbon cycle?
- Identify the conversion which represents nitrification.
- Identify the statement that is NOT true about acid rain.
- How is it possible to include that eutrophication of bodies of water has occurred?
- When burned, which fossil fuel will release the greatest amount of pollution into the air?
- Which of the following is NOT a source of nitrogen that is available to plants?
- Within the biogeochemical cycle, where do consumers get most of their elements from, not including oxygen and hydrogen?
- Put the following elements in order of abundance by weight in living organisms, starting with the most abundant, and ending with the least abundant: iron, copper, phosphorus, oxygen, and hydrogen.
- Which of the following is not a component of the phosphorous cycle
- What is biogeochemical cycling?
- What is a modern human intervention in the phosphorous cycle?
- Cloud formation is an example of condensation because.
- Transpiration is the process that occurs when.
- What are the three main parts of the water cycle?
- Steam is an example of which part of the water cycle?
- How much "new" water is made through the processes of the water cycle?