Phosphorus cycle
The categories of cycles in the phosphorus cycle
What are biological, human, and geological
The categories of cycles in the water cycle
What are biological and physical ?
The categories of cycles in the carbon cycle
What are biological, human, geological and physical?
The categories of cycles in the nitrogen cycle
What are biological, human, and physical
Nutrient whose supply limits productivity.
What is a limiting nutrient?
The place in which phosphorus is contained
What are rocks and minerals
The word for water going from land to the sky
What is Evaporation ?
Plants use co2 in the process of this.
What is photosynthesis?
Bacteria in the soil that break down ammonia into nitrogen .
What are denitrification bacteria?
Use this to help replace nutrients in plants
Fertilizer
The essential chemical phosphorus makes up
What is DNA?
The word for water turning into clouds
animals use this in the process of respiration
Oxygen
The percentage of nitrogen gas in our atmosphere
What is 78%
The limit in the ocean.
What is nitrogen?
A source of phosphorus in water
What is pollution?
The word for water falling back to land
What is precipitation?
The main regulator of co2 in the atmosphere.
What is the ocean?
Special bacteria that change nitrogen so other organisms can use it.
What are nitrogen-fixing bacteria?
The limit in freshwater.
What is phosphorus?
overgrowth
What does too much phosphorus lead to?
Where water is underground.
What is groundwater?
Coal, oil, and natural gas.
What are fossil fuels?
animals eat this, which contains nitrogen.
What are plants?
the limit in soil
What are nitrogen, phosphorus, potassium and some micronutrients?