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- 1. Multiple Choice
The process in which water vapor is released into the air through the stoma on the leaves of plants is called __________.
Evaporation
Transpiration
Precipitation
Condensation
- 2. Multiple ChoiceThe following are part of the carbon cycle EXCEPT _________.respirationprecipitationdecompositionphotosynthesis
- 3. Multiple ChoiceLong-term process of the carbon cycle can form the following __________.limestonesandstonecoquinabasalt
- 4. Multiple ChoiceBacteria in soil change __________ into ingredients plants can use.H2O2N2He2
- 5. Multiple ChoicePlants rely heavily on ____ in the nitrogen cycle to incorporate nitrogen into organic compoundsbacteriavirusesfungioxygen
- 6. Multiple Choice
Green plants and algae make their own food through photosynthesis. What is photosynthesis?
a cell process that uses energy from sunlight to convert water and oxygen into food
a cell process that uses energy from sunlight to convert water and glucose into food
a cell process that uses energy from sunlight to convert water and chlorophyll into food
a cell process that uses energy from sunlight to convert water and carbon dioxide into food
- 7. Multiple Choice
_______________________ converts nitrogen into a form that plants can absorb.
Denitrifying bacteria
Nitrogen fixing bacteria
Decomposers
- 8. Multiple Choice
How do animals obtain nitrogen stored in plants?
Denitrifying bacteria
Nitrogen fixing bacteria
Directly from the atmosphere
They eat the plants
- 9. Multiple Choice
Which of the following cycles lacks a gas phase? This means that the element does not exist in a gas phase.
carbon
nitrogen
phosphorous
none of the above
- 10. Multiple Choice
Where can you find carbon?
Only in the Earth's atmosphere
Inside all water molecules
Inside the sun
Inside every living thing on Earth
- 11. Multiple ChoiceDecomposition releases __________ into the soilhydrogenoxygennitrogenhelium
- 12. Multiple ChoiceWhen water moves downward through spaces in rock or soil it becomes __________.runoffa streamgroundwatera lake
- 13. Multiple Choice
What effect does the sun have on surface water?
it causes it to boil
it causes it to rain
it causes it to sink
it causes it to evaporate
- 14. Multiple Choice
Which of the following most accurately describes the path of a nitrogen molecule through the environment?
It moves through the environment once--going from gas, to solid, and back to gas
It moves through the environment repeatedly, and always in the same order
It moves through the environment repeatedly, but not necessarily in the same order
It moves through the environment twice, then disappears
- 15. Multiple Choice
How does carbon become locked inside the earth?
Tree roots expel carbon into the soil as they grow
Humans use machines to pump carbon dioxide into large underground tanks
Rocks become richer in carbon as time goes on
The carbon-rich bodies of plants and animals decay into the earth after they die
- 16. Multiple ChoicePhosphorous is passed from plants to ____ who eat themplantsanimalsscavengers
- 17. Multiple ChoiceWhich of the following statements is true of the phosphorus cycle?Phosphorus enters the atmosphere as phosphates.The phosphorus cycle utilizes the processes of erosion, and weathering.Phosphates are used in carbohydrate and glucose storage.The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.
- 18. Multiple ChoiceWhat role do decomposers play in the phosphorous cycle?absorb phosphorousrelease phosphorous into atmospherereturn phosphorous into the soilcombustion
- 19. Multiple ChoiceWhen humans burn fossil fuels, most of the carbon quickly enters the as carbon dioxide.WaterAtmosphereSunAir
- 20. Multiple ChoiceHow do living organisms return carbon to the atmosphere in the carbon cycle?respiration and photosynthesisdecomposition and respiration
- 21. Multiple ChoiceOrganisms that play a role in the nitrogen cycleonly plantsonly animalsonly bacteriaplants, animals, & bacteria
- 22. Multiple ChoicePlants and animals need nitrogen to make __________.ProteinCarbohydratesLipidsNucleic Acids
- 23. Multiple ChoiceWhen nitrogen gas is turned in to a form that plants and animals can use is calledCombustionPhotosynthesisDecompositionNitrogen Fixation
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