___________ is the process in which a liquid changes into a gas.
What is evaporation
100
This element makes up all living things.
What is Carbon
100
The way nitrogen moves between the air, soil, plants, and animals is called the ___________.
What is the nitrogen cycle.
100
Organisms that recycle matter in deat organisms are called _________________.
What is decomposers.
100
Heat energy makes water __________ and rise into the air.
What is evaporate.
200
____________ is the process in which a gas changes into a liquid.
What is condensation.
200
Carbon is recycled by ____________.
What is nature.
200
When plants die, ____________ in the soil break down the plant proteins. One product is the ammonia. Soil bacteria changes the ammonia into nitrites.
What is decomposers.
200
Decomposers break down dead wood into carbon dioxide and _____________, which contains nitrogen.
What is ammonia.
200
Plants use carbon to make sugars, starches, and proteins during _______________.
What is photosynthesis.
300
________________ is any form of water particles-- rain, sleet, snow, or hail-- that falls to Earth.
What is precipitation.
300
This is the continous transfer of carbon between the atmosphere and living things.
What is the carbon cycle.
300
________ is made up of about 78% nitrogen gas.
What is air.
300
Nitrogen is found in ____________, substances that add minerals to the soil.
What is fertilizers.
300
Plants get nitrogen by absorbing it from the _________.
What is soil.
400
This is the continuous movement of water between Earth's surface and the air, changing from liquid to gas to liquid.
What is the water cycle.
400
During photosynthesis ___________ use the carbon from carbon dioxide to make sugars, starches, and proteins. They also give off oxygen, which is used by animals.
What is plants.
400
__________ can use nitrogen from the air to make nitrogen-containing substances called nitrites.
What is bacteria.
400
__________ is an inexhaustible resource.
What is sunlight.
400
Dead trees provide __________ that other trees need.
What is elements.
500
Evaporation, Condensation, and Precipitation are all parts of the ______________.
What is the water cycle.
500
When living things die, the ____________ in them goes into the air and ground. Some of it is turned into carbon dioxide by decomposers. Some is stored as fossil fuels. This is what happened to to organisms that died millions of years ago.
What is carbon.
500
Nitrites and nitrates contain ____________.
What is nitrogen.
500
A resource that can be replaced, like a tree, is ___________.
What is renewable.
500
The building blocks of products are ______ __________