Nitrogen Cycle
Nitrogen gas is colorless, odorless, and ___________, causing most organisms to use only compounds made from nitrogen.
What is unreactive?
The continuous exchange of carbon among living things.
What is the carbon cycle?
The 3 main parts of the water cycle.
What is evaporation, condensation, precipitation?
Tool that shows the amount of energy available at each feeding level.
What is an energy pyramid?
The process where N2 molecules in the air break apart and combine with other atoms to form usable nitrogen.
What is nitrogen fixation?
The carbon cycle includes sunlight, _________, and respiration.
What is photosynthesis?
What is evaporation?
Defines the non-living parts of an ecosystem.
What is an abiotic factor?
What is atmospheric fixation?
Carbon in dead organisms is returned to the carbon cycle through this process.
What is decomposition / combustion / fossil fuels?
The changing of a gas into a liquid as the gas cools
What is condensation?
What is producer?
The process of returning nitrogen to the atmosphere by bacteria living deep in swampy sediments.
What is denitrification?
Carbon can only go from the atmosphere to plants through _____________.
What is photosynthesis?
Energy needed for changes in the water cycle to occur.
What is the sun?
Nitrogen fixing bacteria living in root nodules of plants is a __________ relationship.
What is symbiotic?
The process that occurs when plants absorb nitrates and consumers eat the green plants.
What is assimilation?
Effect that occurs when gases are trapped in the Earth's atmosphere and warm the planet.
What is the greenhouse effect?
How water leaves the atmosphere to return to Earth's surface.
What is precipitation?
The total population in Dallas is 1,300,000 people in an area of 339.96 mi2. What is the population density of Dallas?
What is 3,824.0 individuals/mi2?