All animals produce this, usually after a good meal.
What is waste?
100
The process by which plants produce CO2?
What is photosynthesis?
100
Evaporation turns liquid water into this state.
What is a gaseous state?
100
These largest bodies of water are involved in all the cycles in nature and accounts for over roughly 70 percent of the Earth's surface.
What are oceans?
100
A form of water that falls from Earth's atmosphere onto it's surface.
What is precipitation?
200
When animals die, they do this and contribute to the cycles of nature.
What is decay?
200
As plants "sweat" water from the pores in their leaves, this process is similar to evaporation.
What is transpiration?
200
Burning these solid states of matter releases carbon into the atmosphere.
What are fossil fuels?
200
These bodies of water help with the process of runoff in the water cycle.
What are rivers, streams, or aquifers?
200
Another name for breathing which releases carbon into the atmosphere.
What is respiration?
300
Animals produce this waste in the carbon cycle that plants seem to thrive on for life.
What is Carbon Dioxide?
300
This microorganism is found in legume plants and transforms nitrogen into a usable form for the plant to thrive.
What is bacteria?
300
What is the state of carbon when it goes through the process of animal/plant respiration?
What is a gaseous state?
300
Nitrates can enter this body of water that is particularly more difficult to see than oceans, streams, etc.
What is groundwater?
300
The process when water that is absorbed by plants, usually through the roots and is evaporated into the atmosphere from the plant surface such as leaf pores.
What is transpiration?
400
Decomposing bacteria in dead animals convert organic nitrogen nutrients back into this chemical.
What is ammonia?
400
Without this bio-molecule, photosynthesis would not occur and neither would our cycles of nature.
What is chlorophyll?
400
Nitrifying bacteria emit gaseous nitrates (NO2) in this process.
What is nitrification?
400
This body of water intakes much carbon in the carbon cycle.
What is the process of ocean intake?
400
The formation of ammonia or its compounds by decomposition of organic matter.
What is ammonification?
500
These animals create activities that interfere with the water cycle by drawing large amounts from surface sources and groundwaters, by polluting water, and by removing or damaging the world’s forests.
What or who are humans?
500
Clear-cutting and burning are two methods in this process which releases carbon into the atmosphere.
What is deforestation?
500
Water is stored in the atmosphere in this process which goes from a solid to a gas.
What is sublimation?
500
Found in bodies of water, this "blue-green" life form is a large contributor in the nitrification process.
What is algae?
500
Often used as a term in culture, when used in the nitrogen cycle it refers to the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment.