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carbon cycle
nitrogen cycle
water cycle
weather
Population
100
The movement of carbon from the nonliving environment into living things and back.
carbon cycle
100
78% of the gases
percentage of the gases in the atmosphere is nitrogen
100
The water planet
The earth is known as.
100
weather
what is happening today.
100
Population
A group of organisms of the same species that live in a specific area and interbreed.
200
Cellular Respiration
process by which carbon is released back into the atmosphere as carbon dioxide
200
The process in which nitrogen circulates among the air, soil, water, plants, and animals in an ecosystem
Nitrogen cycle
200
renewable
Water is a ______ resource.
200
Climate
The typical weather pattern of a region
200
Density
The number of individuals that live in a given area.
300
carbonates
carbon may be converted into
300
Bacteria that convert atmospheric nitrogen into ammonia.
nitrogen- fixing bacteria
300
Oceans
Most of Earths water is located
300
what is weather
named by the direction it comes from
300
growth rate
The change in the size of population over a period of time.
400
cellular respiration
organisms that make their own foo through photosynthesis also release carbon dioxide during
400
When fuel is burned, large amounts of nitric oxide is release into the atmosphere.
acid precipitation
400
Solid, Liquid, and Gass
The earth has three forms of water.
400
El Nino
Warm water in the pacific results in excess moisture in the air.
400
Carrying Capacity
Largest population that an environment can support at any given time
500
6 billion metric tons
number of metric tons of carbon released into the atmosphere in the year 2000
500
A process in which nitrogen is cycled between the atmosphere, bacteria, and other organisms.
nitrogen cycle
500
1%
The amount of water on earth that can is clean.
500
Latitude Topography Oceanic Circulation Atmosphere Circulation
The four factors that determine weather
500
J- Curve
Represents exponential growth