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What are two ways in which cutting down the trees in a forest affect the ecosystem?
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
_____________________ is passed up the food chain by herbivores and carnivores.
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
Nitrogen is absorbed by plants. Plants use nitrogen to make important plant _______________________.
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
A swelling on a plant root that contains nitrogen-fixing bacteria is
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
________________________ release nitrogen back into the soil. They do this by breaking down the material in dead organisms and their waste products.
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
Nitrogen molecules make up _______________________ of the earth's atmosphere.
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
Some ___________ in soil perform denitrification. This releases nitrogen back into the atmosphere.
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
The brown smog produced when air pollutants react with sunlight is
It can make the ecosystem lose nitrogen. Too much carbon dioxide can build up.
bacteria
decomposers
nitrogen
nodule
molecules
photochemical smog
78 percent
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