Cycles of Matter Answers

0 verified answers17 views
1
Free Preview

How is the nitrogen cycle important to humans?

A
It produces free nitrogen that can remove carbon dioxide from the atmosphere.
B
It converts nitrogen into a form that humans can obtain by eating other organisms.
C
It produces nitrogen compounds that humans can breathe.
D
It converts nitrogen into a form that humans can obtain by absorbing it through their skin.
2
Free Preview

Which best compares the roles of nitrogen-fixing bacteria and certain decomposers in the nitrogen cycle?

A
Both organisms convert free nitrogen into nitrogen-containing compounds.
B
Both organisms convert nitrogen-containing compounds into free nitrogen.
C
The bacteria convert free nitrogen into nitrogen-containing compounds, while the decomposers convert nitrogen-containing compounds into free nitrogen.
D
The bacteria convert nitrogen-containing compounds into free nitrogen, while the decomposers convert free nitrogen into nitrogen-containing compounds.
3

precipitationtranspirationevaporationcondensation

A
precipitation
B
transpiration
C
evaporation
D
condensation
4

Which best describes a role of animals in the water cycle?

A
They help water vapor condense when they produce waste.
B
They help water vapor condense when they inhale.
C
They release water vapor through transpiration.
D
They release water vapor when they exhale.
5

water vaporgroundwaterrunoffcondensation

A
water vapor
B
groundwater
C
runoff
D
condensation
8

Which process occurs when bacteria converts nitrogen gas to a usable form?

A
decomposition
B
condensation
C
fixation
D
transpiration

Did you find these answers helpful?