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Biosphere
Hydrosphere
Geosphere
Atmosphere
Reseviors
100

What is the biosphere?

The biosphere is life below the earth surface.

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.
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?