Carbon cycle
Plants use CO2 in the process of
What is photosynthesis
Phosphorus is NOT found in the free state in nature but is contained mostly in these two things
what is minerals and rocks
Out atmospheres is Nitrogen gas
What is 78 percent
ForMarion of clouds, light even, flow of water
Chemical/physical
true or false nitrogen fixing are required for life
What is true
In the past huge deposits of carbon were stored as dead plants and animals
What is decade
It is an essential nutrient for life as it makes up important chemicals such as
What is DNA
Animals and plants cannot directly use all the nitrogen found in our
What is atmosphere
Activities performed by living organisms
What is biological
How many different cycle do human affects
What is all cycles
More CO2 is released in the atmosphere today than in the past because of what
What is burning of fossil fuels
Some of the phosphorus in soils can be washed away into water
What is water basins
Higher organism use nitrogen to make there
What is there proteins
Volcanic eruption, rock formation, and plate tectonics
What is geological
Excess nutrients can create what
What is dead zones
Today depos are burned as fosssil fuels which include these three things
what is coal, oil, and natural gas
Another source of phosphorus in water comes from man made
What is pollution
Animal waste decay by the action of bacteria which create these two things
What is ammonia and mitrate
Mining and burning of fossil fuels, clearing of land, use of fertilizer
What is human activity
true or false phosphorus cycles through the atmophere
What is false
Animals use oxygen in the process of To make more CO2
What is respiration
To much phosphorus in water leads to
What is plant overgrowth
Only special bacteria can directly use nitrogen in our atmosphere these bacteria are called
What is Nitrogen fixing
Lack of nitrogen, phosphorus, potassium and some micronutrients
What is limitations
All cycles are needed for life
What is true