AnswersTX-Earth Systems ACycles of Matter

Cycles of Matter Answers

0 verified answers2 views
1
Free Preview

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
2
Free Preview

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.
3

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.
4

Which human activity would most likely decrease the amount of carbon in the atmosphere?

A
clearing forests
B
heating coal
C
burning wood
D
planting trees
5

Cleo has a vegetable garden and wants to increase the amount of nitrogen in the soil.How can she most likely do this?

A
add several soybean plants to her garden
B
decrease the amount of fertilizers she uses
C
harvest the vegetable plants continuously
D
reduce the number of decomposers that live in the soil
6

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

A
decomposition
B
condensation
C
fixation
D
transpiration
7

[BLANK]

A
precipitation
B
transpiration
C
evaporation
D
condensation
8

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
9

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.
10

[BLANK]

A
water vapor
B
groundwater
C
runoff
D
condensation
11

After Gerry mows his lawn, he often puts the grass clippings into his flower garden.How will this affect his garden?

A
It will decrease the amount of carbon in the soil and decrease the amount of carbon dioxide released by decomposers.
B
It will increase the amount of carbon in the soil and decrease the amount of carbon dioxide released by decomposers.
C
It will decrease the amount of carbon in the soil and increase the amount of carbon dioxide released by decomposers.
D
It will increase the amount of carbon in the soil and increase the amount of carbon dioxide released by decomposers.
12

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.
13

Which processes result in the release of carbon? Select three options.

A
Animals break down food molecules to obtain energy.
B
The remains of producers are broken down by decomposers.
C
The remains of consumers are broken down by soil decomposers.
D
Producers take in carbon dioxide.
E
Producers make sugars and starches.
14

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

Did you find these answers helpful?

More from this Course

Quiz
21 verified answers

Winds

Quiz
16 verified answers

Structure and Composition of the Atmosphere

Quiz
13 verified answers

Cycles of Matter