Carbon Cycle
Animals get the carbon and energy they need by eating this.
What is Plants?
The biggest water factor in the phosphorus cycle.
What is the ocean?
____ _____ is the movement of nitrogen between the enviroment and living things.
What is the nitrogen cycle?
Evaporation turns liquid water into _________.
What is water vapor?
Exchange of oxygen and carbon dioxide between living cells and their environment is this.
What is respiration?
Phosphorus not found in free state in nature but in mostly these.
What is Rocks and Minerals?
The percent of how much of our atmosphere is nitrogen gas.
What is 78%?
________ temperatures cause condensation of water vapor.
What are cooler temperatures?
The process of burning a substance.
What is combustion?
Animals eat this which is eventually returned to soil.
What is Plants?
Many _____ pass from soil to plants to animals and back.
What is nutrients?
The is the origin of energy that drives the Water Cycle.
What is the Sun?
Carbon returns to the environment when these molecules are broken down.
What are sugar molecules?
Humans can get phosphorus through the process of this.
What is mining?
____ causes some nitrogen fixation.
What is lightning?
___________ carries water to rivers or streams that flow into oceans
What is runoff?
The food that plants make through photosynthesis is in the form of this.
What is glucose?
phosphorus makes up this important chemical
what is DNA?
bacteria in the soil can break down the ammonia into the gaseous form of nitrogen
What is denitrification?
Evaporation takes place mostly in _______ and ________.
What are lakes and oceans?