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Sydney drew a flow chart to illustrate the nitrogen cycle.
Which labels best complete the flow chart?
Bacteria fix
nitrogen from
the air
X: Producers undergo photosynthesis.
Y: Nitrogen compounds are released into the air.
X: Nitrogen compounds are released into the air.
Y: Producers undergo photosynthesis.
X: Free nitrogen is in the atmosphere.
Y: Producers absorb nitrogen compounds through their
roots
X: Producers absorb nitrogen compounds through their
roots
Y: Free nitrogen is in the atmosphere.
Y
Consumers
eat other
organisms
Decomposers
break down
dead organisms
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Which table best shows the impacts resulting from human activity? impact of human activities human activity impact use of manure and other organic fertilizers reduction in population of birds use of pesticides in farms increase in bird population in nearby wetlands impact of human activities human activity impact use of manure and other organic fertilizers reduction in animal population use of pesticides in farms increase in population of native insects and bugs impact of human activities human activity impact use of plastic decrease in marine animal population removal of beach grass increase in pollution of ocean impact of human activities human activity impact use of plastic increase in fish population removal of beach grass decrease in sand erosion