Stereochemistry worksheets
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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
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
_______________________ converts nitrogen into a form that plants can absorb.
Denitrifying bacteria
Nitrogen fixing bacteria
Decomposers
How do animals obtain nitrogen stored in plants?
Denitrifying bacteria
Nitrogen fixing bacteria
Directly from the atmosphere
They eat the plants
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
Where can you find carbon?
Only in the Earth's atmosphere
Inside all water molecules
Inside the sun
Inside every living thing on Earth
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
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
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
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