Carbon cycle
nitrogen cycle
energy flow
water cycle
100

It breaks apart energy in carbohydrate molecules and releases the carbon as carbon dioxide into the air, which is in turn absorbed by plants

What is Cellular respiration

100

This substance makes up about 78% of our atmosphere. Gaseous, oxygen, gaseous nitrogen.

What is gaseous nitrogen, also called N2

100

An organism that can make its own food.

What is a producer?

100

When the sun heats up liquid water, this process occurs.

What is evaporation?

200

the worlds lakes and oceans contain 50 times more carbon dioxide than the air

What is Carbonic Acid

200

The nitrogen cycle is vital to life. 

T or F.

What is True?

200

Both a food chain and an energy pyramid begin with this organism?

What is a producer?

200

When water vapor changes into water droplets.

What is condensation?

300

This occured due to the change of balance of carbon in the atmosphere

What is the Carboniferous Period

300

___ organisms can't use nitrogen in its gaseous state. 

Most, few.

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What is Most?

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300

More or Less: Each level of an energy pyramid has ___ energy as you move to the top.

What is less?

300

Any moisture that falls to the ground from clouds is called ___?

What is precipitation?

400

It is like a natural carbon recycler

What is the Carbon cycle

400

The chemical bond between the two nitrogen atoms that make the gaseous form is __ to break. 

Easy, hard.

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What is Hard?

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400

More or Less: There are ___ organisms at the highest or top level in an energy pyramid.

What is less?

400

Water flowing on Earth's surface.

What is runoff?

500

plants absorb from the air and combines with oxygen to produce carbohydrates and oxygen which is breathed in by living organisms

What is carbon dioxide

500

Nitrogen compounds are a limiting factor. 

T or F

What is True?

500

More or Less A food web shows ___ food choices for what organisms can eat than a food chain.

What is more?

500

These are the 3 states of water.

What are gas, liquid, and solid?

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