Which of the following explains why your body may contain a carbon atom that was present in George Washington’s body in 1776? (1 point)

Carbon moves in a one-way direction through living organisms only.
Carbon moves in a one-way direction from the atmosphere and then through living organisms.
Carbon moves in a cyclic fashion through living organisms only.
Carbon moves in a cyclic fashion through the atmosphere and living organisms.


2. Which of the following does not release carbon back into the atmosphere?
volcanic eruption
respiration
burning fossil fuels
photosynthesis

3. How would the carbon cycle be affected if all producers were removed?

Carbon compounds in animals would not be broken down to release carbon dioxide back into the atmosphere.
Carbon would not have a way to enter the bodies of living things.
Carbon dioxide levels in the atmosphere would decline significantly.
Carbon would continue to cycle between consumers and decomposers.


4. Which of the following could be done to help reduce global warming trends?

Plant more trees.
Bottle more water.
Raise more livestock.
Build more schools.