Miscellaneous
Water, carbon, nitrogen, and phosphorus.
What are the 4 Nutrient Cycles?
The process where plants use carbon dioxide and water to make sugar and oxygen.
What is photosynthesis?
Special bacteria that fix nitrogen so that other organisms can use it.
What are nitrogen-fixing bacteria?
The 2 things that phosphorus is mostly contained in.
What are rocks and minerals?
Biological, geological, chemical/physical, and human activity.
What are the 4 classifications for the nutrient cycles?
Process where animals use oxygen to make carbon dioxide.
What is respiration?
Higher organisms use this to make their proteins.
What is nitrogen?
The place where phosphorus in soil is washed away to.
What are water basins?
Nutrient whose supply limits productivity.
What is a limiting nutrient?
The geological feature that emits carbon dioxide.
What are volcanoes?
The type of bacteria in the soil that breaks down the nitrogen into the gaseous form.
What is denitrification bacteria?
Too much phosphorus in water can lead to this.
What is overgrowth?
Chemical substances that an organism needs to sustain life.
What are nutrients?
The 3 main fossil fuels that when burned emit carbon dioxide.
What are coal, oil, and natural gas?
The 2 substances that bacteria create which are rich in nitrogen.
What are ammonia and nitrate?
Animal waste products help return this to the soil.
What is sulfur?
Limiting in freshwater environments.
What is phosphorus?
The main regulator of carbon dioxide in the atmosphere.
What is the ocean?
The amount of nitrogen gas in our atmosphere.
What is 78%?
Geological activity turns marine sediments into this.
What is rock?