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8th Grade

10 Qs

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Assessment

Quiz

Biology

8th Grade

Practice Problem

Hard

Created by

Teresa Walker

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?

The carbon cycle

The water cycle

The nitrogen cycle

The phosphorous cycle

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the human body return carbon to the atmosphere in the carbon cycle?

Waste products

Photosynthesis

Cellular respiration

Formation of glucose

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the carbon cycle, animals can release carbon back into the cycle through __________ or through __________.

burning . . . photosynthesis

fixation . . . decomposition

decomposition . . . photosynthesis

respiration . . . decomposition

respiration . . . photosynthesis

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of human impact on the carbon cycle?

The increased production of methane gases from cattle farms

The burning of fossil fuels

The cutting down of trees for lumber

Driving automobiles

All of the above

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a forest fire occurs, what will happen to the carbon in the forest?

It will go into the soil

It will go into the atmosphere

It will runoff into nearby streams and rivers

It will be destroyed

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where does all the carbon in organisms (living things) originate from?

Earth's atmosphere

Rocks

Water

Soil

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do organisms (living things) move carbon through the carbon cycle?

Respiration only

Decomposition only

Photosynthesis, respiration, and decomposition

Decomposition and sedimentation

Respiration, decomposition, sedimentation, and photosynthesis

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