Question

2. Carbon is cycled back into the atmosphere by all of the following :
*
20 points
cellular respiration
photosynthesis
burning fossil fuels
all of the above
3. Which of the following is NOT a way that humans can reduce carbon emissions?
*
20 points
Reduce Carbon emissions in factories/cars
Use clean energy like solar or wind
Cut down more trees
Recycle
4. Which of the following is the most accurate and complete definition of the carbon cycle?
*
20 points
The process that only occurs when an animal dies and decomposes
The exchange of carbon as it is recycled and reused
Something that only happens when we breath out
The depletion of carbon in the Earth’s atmosphere
5. How have humans impacted the carbon cycle?

*
20 points
Cutting down trees for timber
Burning of fossil fuels
A and B are both true
none of the above

Answer 1

Here are the correct answers with brief explanations:

2. Carbon is cycled back into the atmosphere by:
- Answer: cellular respiration and burning fossil fuels
- Explanation: Both cellular respiration and burning fossil fuels release CO2 to the atmosphere. Photosynthesis removes CO2 from the atmosphere, so it does not cycle carbon back into the air.

3. Which is NOT a way humans can reduce carbon emissions?
- Answer: Cut down more trees

4. Most accurate definition of the carbon cycle:
- Answer: The exchange of carbon as it is recycled and reused

5. How have humans impacted the carbon cycle?
- Answer: A and B are both true (Cutting down trees for timber and Burning of fossil fuels)