Card Set Information
What is the nitrogen cycle?
The nitrogen cycle is nitrogen gasfixed, or changed into forms of nitrogen that plants can use. These forms are nitrated and ammonia.
What are two forms of nitrogen that plants and animals can use?
Nitrates and ammonia.
Where can nitrogen be found?
In Earths atmosphere, 78%.
How can nitrogen be fixed?
By lightning and bacteria in the soil and in noudels or small lumps on the roots of plants.
What is the carbon-oxegen cycle?
The process of moving carbon and oxegen among plants, animals,and the enviorment.
What is respiration?
Respiration is the process that realesses energy from food.
The cycle of carbon and oxegen through the enviorment depends on whattwo processes?
Photosyenthesis and respiration.
What area on earth contains 90% of the orginisims that get their foos through photosyenthesis?
_____________________is when the plants change sunlight into food and oxegen for animals.
Organisms in the Ocean take in__________________
and release oxegen.
During resspations what is relesed?
Petrolem is created by
Over millions of years, carbon releaed
Solar energy is what?
Solar energyois the process of sunlighrt providing energy through photocenthisis.