AnswersEarth Systems BLab: Environmental Changes in a Watershed

Cycles of Matter Answers

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1
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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.
2
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Chen drew a diagram to compare the ways in which different organisms obtain nitrogen.

Question illustration
A
take in from atmosphere
B
produce themselves
C
eat other organisms
D
absorb from soil
3

Scott made a model of the water cycle by filling a tub with water, covering the tub with clear plastic, and placing a heat lamp over the tub. After a few days, he observed water droplets collecting on the plastic wrap.What process formed the water droplets in Scott’s model?

A
evaporation
B
transpiration
C
condensation
D
precipitation
4

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.
5

Some bacteria live in the roots of plants like soybeans and peas.

Question illustration
A
to absorb nitrogen-containing compounds from the soil
B
to release free nitrogen into the atmosphere
C
to break down nitrogen-containing compounds in dead organisms
D
to convert free nitrogen into usable nitrogen
6

Kate wrote the steps of the carbon cycle to describe how carbon is cycled through specific organisms. The steps are in random order.1 - The rabbit decomposes.2 - The rabbit eats the carrot plant. 3 - The carrot plant takes in carbon dioxide from the air during photosynthesis.4 - Carbon compounds are returned to the soil.

A
2, 3, 1, 4
B
3, 2, 1, 4
C
3, 4, 2, 1
D
2, 4, 3, 1
7

[BLANK]

A
water vapor
B
groundwater
C
runoff
D
condensation
8

The diagram illustrates part of the carbon cycle.

Question illustration
A
A consumer is obtaining carbon by breathing it in from the atmosphere.
B
A consumer is obtaining carbon by absorbing it from the soil.
C
A consumer is obtaining carbon by eating carbon-based molecules stored in a producer.
D
A consumer is obtaining carbon by eating carbon-based molecules stored in a decomposer.
9

[BLANK]

A
precipitation
B
transpiration
C
evaporation
D
condensation
10

During which process of the water cycle does water change from a gas to a liquid?

A
precipitation
B
condensation
C
transpiration
D
evaporation

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Lab: Environmental Changes in a Watershed