Biogeochemical Cycles

Biogeochemical Cycles

11th - 12th Grade

•

32 Qs

quiz-placeholder

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Biogeochemical Cycles

Biogeochemical Cycles

Assessment

Quiz

•

Science

•

11th - 12th Grade

•

Medium

Created by

Allison Sherman

Used 4+ times

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32 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Guano from fish-eating birds is a commercial source of this element.

carbon

sulfur

sodium

phosphorous

potassium

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the burning of fossil fuels contribute to the net increase in atmospheric carbon?

Photosynthesis is reduced by virtue of increased smoke and haze

Carbon released by the burning is not in a form that can be readily absorbed by plants, leaving residual carbon in the atmosphere.

Carbon that has been sequestered underground is added to the carbon cycling between the atmosphere and the biosphere.

Carbon released by the burning is more easily absorbed in the atmosphere than that produced by natural means.

Carbon released by the burning increases plant growth, producing more carbon for the atmosphere.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which of the following pathways indicate how nitrogen is added to the largest nitrogen reservoir?

Nitrifying bacteria and lightning

Decomposing plant and animal material

Denitrifying bacteria and volcanic activity

Nitrates taken up by plant roots

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The net annual primary productivity of a particular wetland ecosystem is found to be 8,000 kcal/m2 per year. If respiration by the aquatic producers is 12,000 kcal/m2 per year, what is the gross annual primary productivity for this ecosystem, in kcal/m2 per year?

4,000

8,000

12,000

20,000

96,000

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The process by which a soil nutrient is reduced and released to the atmosphere as N2 gas

photosynthesis

eutrophication

nitrogen fixation

denitrification

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which of the following major storage reservoirs of carbon, stored in the form of carbon dioxide, is NOT represented in this diagram?

algae

soil bacteria

the moon

the ocean

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The diagrams above show an area that was once a pasture that has since undergone changes to the vegetation over time. Which of the following changes in the hydrologic cycle is most likely to occur as a result of the change in vegetation in the area?

increased infiltration

increased runoff

decreased transpiration

decreased precipitation

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