Photosynthesis
Respiration
Combustion
Decomposition
Vocab
100

Animals get the carbon and energy they need by eating this.

What are plants?


100


Respiration uses this.

What is oxygen?

100

When humans burn fossil fuels carbon enters the atmosphere in this form.

What is carbon dioxide?

100

These two organisms are the main things that decompose organic matter.

What are fungi and bacteria?

100

The exchange of carbon between the environment and living things is known as this.


What is the carbon cycle?

200

During photosynthesis plants use carbon dioxide to make this


What is sugar?

200


Carbon returns to the environment when these molecules are broken down.



What are sugar molecules?

200


These are the two main substances burned in combustion.

What are wood and fossil fuels?

200

List two scavengers that contribute to decomposition.

 What are coyotes, dogs, wolves, foxes, rats, crows, and vultures.(any 2 of these)

200

The basis of the carbon cycle when plants capture energy from the sun and change it into food.


What is photosynthesis?

300

Plants get the carbon dioxide from this.

What is air?

300


These are the two byproducts of respiration.


What are carbon dioxide and water?

300

The chemical reaction gives off this.

The chemical reaction gives off this.What is heat?

300

True or False: All organisms decompose in the same way.

 What is false?

300

The process of burning a substance.

What is combustion?

400

This is the main pigment used in photosynthesis.



What is chlorophyll?

400


Respiration uses food and oxygen to create this.




What is chemical energy?

400

These are the two reactants of combustion.

What are fuel and oxygen?

400

When fungi and bacteria break down organic matter these two substances are returned to the environment.


 What are carbon dioxide and water?

400

The breakdown of substances into simpler molecules.

What is decomposition?

500

The food that plants make through photosynthesis is in the form of this.

What is glucose?

500


Lightness or darkness is needed in respiration.(which one)


What is neither?

500

These are some additional chemicals that are formed during the combustion reactions

What are CO (carbon monoxide), NO (nitric oxide), NO2 (nitrogen dioxide), SO2 (sulfur dioxide), soot, and ash?

500

There are ______stages of decomposition.

What is two?

500

Exchange of oxygen and carbon dioxide between living cells and their environment is this.

What is respiration?

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