water
carbon
nitrogen
ecosystems energy
100
What are the three main water sources that store the water on earth.
Rivers, oceans, lakes.
100
what moves through the earths ecosystem
carbon cycle
100
How much of the air do you breath that is clear.
Four fifths
100
what is the type of energy that we use?
chemical energy
200
what are two objects that hold large amounts of water.
glacier, polar ice sheets.
200
what is carbon found in
all living things.
200
can plants use pure nitrogen?
no
200
What is the energy released to the environment become.
heat
300
what is a series that happens over and over
Cycle
300
plants use carbon dioxide to produce?
sugar
300
what is one source of How the nitrogen from the atmosphere get into the soil.
lighting
300
what does living things need to do before they use the suns energy
capture it.
400
what is the movement of water through the environment called
Water cycle
400
What holds more carbon the air or the ocean?
The ocean
400
What is another way nitrogen gets to the ground.
Another way is when it rains.
400
what is a producer.
it is an organism that captures energy.
500
what are the main steps in the water cycle
evaporation, condensation, precipitation and run off
500
What is it called when the carbon in fossil fuels return to the ecosystem
combustion
500
can bacteria break down nitrogen?
yes certain kinds.
500
what is the most found producer.
plant.
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