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Question

Local conditions, such as heavy rainfall or the removal of plants, may limit the amount of nitrogen, phosphorus, or calcium available to a particular ecosystem, but the amount of carbon available to the system is seldom a problem because


A

Organisms do not need very much carbon

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B

Plants can make their own carbon using water and sunlight

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C

Plants are much better at absorbing carbon from the soil

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D

Many nutrients come from the soil, but carbon comes from the air

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Solution

The correct option is D

Many nutrients come from the soil, but carbon comes from the air


The correct option is D

The explanation for the correct option:

  1. Local variables, such as high rainfall or plant clearance, may limit the quantity of nitrogen, phosphorus, or calcium accessible to a given ecosystem, but carbon availability is rarely an issue.
  2. Plants consume carbon in the form of carbon dioxide (CO2), which is abundant in the environment.

Final answer: Amount of carbon available to the system is seldom a problem because many nutrients come from the soil, but carbon comes from the air.


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