carbon cycle
Geologic activity that releases CO2
What are volcanoes?
the three parts of the water cycle
What are precipitation, condensation, and evaporation?
78% of this gas makes up the atmosphere
What is nitrogen?
What phosphorus is turned into, used on crops
What is phosphorus?
2 things that are burned to release CO2
What are forests and fossil fuels?
How groundwater is released into the atmosphere
What is transpiration?
The organism that fixes nitrogen so it can be used by other organisms
What is bacteria?
2 places phosphorus is contained
The main regulator of CO2
What is the ocean?
When water falls to the surface of earth
What is precipitation?
How does nitrogen gas get into the ocean
What are rivers and streams?
phosphorus makes up this important chemical for life
What is DNA?
caused by too much carbon in the atmosphere
What is the greenhouse effect?
when water falls to the earth
What is precipitation?
How nitrogen is released
What is excretion and decomposing matter?
This turns marine sediments into rock
What is Geologic activity?
What is respiration?
Where H20 gas is found
What is the atmosphere?
Process by which bacteria break down ammonia into nitrogen gas
What is dentrification?
Why too much phosphorus is harmful in water
What is overgrowth?