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Carbon & Nitrogen Cycles

Authored by Wayground Content

Science

9th Grade

Used 23+ times

Carbon & Nitrogen Cycles
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15 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the greenhouse effect?

The cooling of the Earth's surface due to the depletion of ozone layer.

The warming of the Earth's surface due to trapped greenhouse gases like carbon dioxide.

The process of photosynthesis in plants that absorbs carbon dioxide.

The increase in Earth's temperature due to solar radiation only.

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How does cellular respiration relate to the carbon cycle?

Cellular respiration releases oxygen into the atmosphere as organisms break down glucose for energy.

Cellular respiration releases carbon dioxide back into the atmosphere as organisms break down glucose for energy.

Cellular respiration converts carbon dioxide into glucose for energy.

Cellular respiration has no effect on the carbon cycle.

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What human activity negatively affects the nitrogen cycle?

Overusing fertilizers negatively affects the nitrogen cycle.

Planting cover crops to improve soil health.

Implementing crop rotation for sustainable agriculture.

Reducing fossil fuel consumption to lower emissions.

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How does decomposition contribute to the nitrogen cycle?

Decomposition releases carbon dioxide into the atmosphere.

Decomposition recycles nutrients back into the soil, making nitrogen available for plants.

Decomposition prevents nitrogen from entering the soil.

Decomposition increases the acidity of the soil.

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is denitrification?

The process of converting nitrogen gas into ammonia by bacteria.

The process by which nitrogen gas is released back into the atmosphere by bacteria.

The process of absorbing nitrogen from the atmosphere by plants.

The process of breaking down nitrogen compounds in soil by fungi.

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is eutrophication and how is it related to the nitrogen cycle?

Eutrophication is the excessive growth of algae in water bodies due to high nitrogen levels, often from fertilizers.

Eutrophication is the process of nitrogen fixation in soil by bacteria.

Eutrophication refers to the depletion of oxygen in water bodies due to overfishing.

Eutrophication is the natural process of nutrient cycling in terrestrial ecosystems.

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What would happen if bacteria were removed from this ecosystem?

Nitrogen would not be available in a form that plants and animals can use.

Plants would grow faster due to less competition.

Animals would thrive without bacteria in the soil.

The ecosystem would become more diverse without bacteria.

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