Question

. Which of the following is the formula for photosynthesis?
*
20 points
CO2 + H2O + light->C6H12O6 + O2
C6H12O6 + O2->CO2 + H2O + light-
O2+ CO2 + light->C6H12O6 + ATP
ATP + CO2 + water->light +O2
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

1. CO2 + H2O + light -> C6H12O6 + O2
(photosynthesis converts carbon dioxide and water into glucose and oxygen)

2. Cellular respiration and burning fossil fuels
(both return carbon to the atmosphere; photosynthesis removes CO2)

3. Cut down more trees
(clearing trees increases CO2 in the atmosphere, so it does not reduce emissions)

4. The exchange of carbon as it is recycled and reused
(this best describes the carbon cycle)

5. A and B are both true
(humans impact the carbon cycle by cutting down trees and burning fossil fuels)