Nutrient Cycles 2

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1. Match the activity below with its nutrient cycle

Fossil fuels burn releasing CO2

N2 from the air get turned into usable nitrate for organisms to use.

Evaporation - Condensation - Precipitation

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2. The term "cycle" is used in nutrient cycles because.

They have two parts like the two wheels of a "bicycle".

Their steps always form a long ring, like a snake biting its tail.

The nutrients always get cycled and recycled through the many paths of the system.

3. Which problem is caused by an unbalanced Carbon Cycle?

Global Warming

Eutrophication

Flooding

4. The Greenhouse Effect is a problem that occurs when.

A water body is destroyed by excess nutrients like nitrogen.

Excess CO2 causes too much heat to be trapped in the earth's atmosphere.

A greenhouse plant receives too much fertilizer.

5. What is nitrogen used for?

To make rain, sleet, and snow

To make proteins

To make living thing

6. Which TWO cycles use bacteria and fungi, which are decomposers, that help the cycle?

Water Cycle

Carbon Cycle

Nitrogen Cycle

Bacteria break down dead organisms to return carbon back into the system. Bacteria break down animal waste to give usable nitrogen back to the system.

Explanation

Bacteria break down dead organisms to return carbon back into the system. Bacteria break down animal waste to give usable nitrogen back to the system.

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7. Which process makes clouds?

Condensation

Precipitation

Evaporation

Runoff