WorksheetsLesson 57: The Carbon-Oxygen Cycle
Total questions: 10
Worksheet time: 6mins
Humans contribute to the amount of released carbon dioxide through all of the following except -
the expansion of urban centers.
burning of fossil fuels.
dstroying forests for use as agricultural land.
using wind energy.
Select all answers below that correctly describe the movement of carbon dioxide in the carbon cycle.
During photosynthesis, plants use carbon dioxide to make glucose and store it as starch.
The decomposition of plants and animals releases carbon dioxide into the atmosphere.
Oceans release carbon dioxide into the atmosphere at an extremely slow rate.
Animals consume carbon stores in plants and then release carbon dioxide during cellular respiration.
What is the correct equation for photosynthesis?
6CO2 + 6H2O + Sunlight --> C6H12O6 + 6O2
None of these is correct.
6CO2 + 6O2 + sunlight --> C6H12O6 + 6O2 + Energy
C6H12O6 + 6O2 --> 6CO2 + 6H2O + Sunlight
Carbon is an element with an atomic number of 6 that is found in all living things and in the atmosphere as carbon (a) .
The circulation of carbon between the living and nonliving parts of an environment is called -
the carbon cycle.
weathering.
global warming.
recycling.
A(n) _________________ is a substance that is discharged from a source.
decomposition
combustion
fuels
emission
Carbon is released to the environment through all of the following except -
combustion.
photosynthesis.
volcanic activity.
decomposition.
The largest reservoir of carbon is in the -
ocean.
coal deposits.
atmosphere.
bodies of living things.
Carbon dioxide is a waste product of -
photosynthesis.
cellular respiration.
osmosis.
DNA replication.
Decomposers break down dead and decaying (a) matter.
