Show:
Carbon Cycle
Nitrogen Cycle
General
Greenhouse Gas
100
Where is most of Earth's carbon located and in what form?
In the Atmosphere in the form of CO2
100
What is the most abundant gas in our atmosphere and what % of the atmosphere does it make up?
Nitrogen around 78%
100

What are the  three elements are the chemical building blocks for all living organisms? (Naming one counts.)

Carbon, Nitrogen, and Phosphorus

100
What are the names of greenhouse gasses?
water vapor carbon dioxide methane
200
How is carbon dioxide returned to the atmosphere?
Through respiration
200
What is nitrogen fixation?
Nitrogen combining with other elements so it can be usable by organisms
200
When plants and animals die and decompose, where does most of the CO2 go?
Back into the air
200
How have human beings affected greenhouse gases over the last two centuries?
Green house gases have increased due to the excess burning of fossil fuels in automobiles and factories
300
Underground carbon is collected in the form of __________
Fossil Fuels
300

Certain Bacteria living on root nodules can convert nitrogen into _______ and _______. (Naming one works.)

NO3 (Nitrates) and NH3 (Ammonia)

300
Some of the carbon left over when plants and animals die drips back into the soil eventually forming what?
Fossil Fuels
300
What happened in the last two centuries that has caused this sudden increase in greenhouse gases?
Industrial revolution
400

Give some examples of fossil fuels. (Naming one works.)

Coal, oil, natural gas, peat

400
How can you split two nitrogen atoms?
A lightning bolt
400
Through respiration, plants in the ocean remove ____ to ______ ________ metric tons of carbon from the air every year
25 - 50 billion
400
What negative impacts happen when there are more greenhouse gasses that occurs unnaturally?
The atmosphere holds onto too much heat which causes the earth to warm up eventually changing the climate.
500
Where can the largest amount of stored carbon be found on Earth?
Sedimentary rock in the Earth's crust
500
What do plants do with the Nitrogen they absorb?
Build Proteins
500

Nitrates and ammonia form bacteria living on the root nodules of _____, ______, __________, and _______ trees. (Naming one works.)

Peas, Beans, Alfalfa, and alder trees