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- 1. Multiple Choice
Oxygen is a gas produced by _ and used by _
plants and animals
photosynthesis and carbon dioxide
animals and plants
carbon dioxide and photosynthesis
- 2. Multiple ChoiceAll of the carbon in existence is continually recycled in the carbon cycleTrueFalse
- 3. Multiple ChoiceWhich of the following removes carbon from the atmosphere?CombustionRespirationPhotosynthesisDeath
- 4. Multiple ChoiceOrganisms that do not decompose can be buried and become what?waternutrientsairfossil fuels
- 5. Multiple Choice
Plants use ____________ to make their own food
Water
Sunlight
Carbon dioxide
All of these
- 6. Multiple Choice
Through the process of photosynthesis, plants pull CO2 from the air to make plant food for themselves.
True
False
- 7. Multiple Choice
How do animals get carbon?
By eating plants and or other animals.
They absorb it from the atmosphere.
From the ground
They do not get carbon from anywhere.
- 8. Multiple Choice
When humans EXHALE, we release __________________.
Oxygen
Carbon Dioxide
Nitrogen
Water
- 9. Multiple Choice
Which of the following are fossil fuels?
Coal, water, oil
Oxygen, coal, oil
Coal, Oil, Natural Gas
None of the above
- 10. Multiple Choice
Where can you find carbon?
Only in Earth's atmosphere
Inside all water molecules
Inside the sun
Inside every living thing on Earth
- 11. Multiple Choice
What organisms in the ocean absorb the most carbon dioxide?
Algae and marine plants
Ocean mammals, like whales and dolphins
Fish
Coral
- 12. Multiple Choice
If the plant population decreased, the amount of carbon in the atmosphere would ____________________.
Increase
Decrease
Stay the same
- 13. Multiple Choice
When humans burn fossil fuels, most of the carbon quickly enters the _______________________ as carbon dioxide.
Water
Atmosphere
Sun
Ground
- 14. Multiple Choice
Carbon enters the soil through dead plant or animal matter.
Decomposition
Respiration
Photosynthesis
Diffusion
- 15. Multiple ChoiceWhat does NOT produce carbon dioxide?PhotosynthesisBurning Fossil FuelsAnimal respirationPlants decaying
- 16. Multiple ChoiceAll of the carbon in existence is continually recycled in the carbon cycleTrueFalse
- 17. Multiple ChoiceCombustion is another word for _______________.a traina busa dogburning
- 18. Multiple ChoiceHow do living organisms return carbon to the atmosphere in the carbon cycle?respiration and photosynthesisdecomposition and respiration
- 19. Multiple Choice
The circulation of the element Carbon among Earth's atmosphere, land, oceans, and organisms is called _____________.
the Carbon Cycle
the Oxygen Cycle
the Carbon dioxide Cycle
the Water Cycle
- 20. Multiple Choice
How do plants affect the air that animals and people breathe?
Plants use oxygen from the air to make their own food
Plants release pollution into the air
Plants take in carbon dioxide and release oxygen
Plants take in oxygen and release carbon dioxide
- Answer choicesTagsAnswer choicesTags