Ecosystems
Energy
Air, Water, Earth
Populations
Global Change
100
This biome is characterized by deciduous trees.
What is the temperate seasonal forest?
100
This energy source utilizes Uranimum-235 as a fuel source.
What is nuclear energy?
100
Of the three soil texture types, this one is the smallest.
What is clay?
100
This type of species provides little to no parental care, has many babies at a time and are usually generalist species.
What are r-related species?
100
This greenhouse gas has a global warming potential 21x stronger than carbon dioxide.
What is methane?
200
This is a nonnative species that is outcompeting native species for resources.
What is an invasive species?
200
This renewable energy source produces hydrogen sulfide gas.
What is geothermal energy?
200
This biogeochemical cycle has no atmospheric component.
What is the phosphorus cycle?
200
This is the stage of demographic transition for this country. 
What is Stage 3?
200
This international agreement aimed at eliminating the use of chlorofluorocarbons.
What is the Montreal Protocol?
300
This law states that energy is neither created nor destroyed, but is converted into other forms.
What is the 1st Law of Thermodynamics?
300
This is the location of the world’s largest hydroelectric dam, with a generating capacity of 22,500 MW.
What is Three Gorges Dam in China?
300
This type of irrigation uses a large system of sprinklers that must be manually moved from field to field and has very large evaporative losses.
What is spray irrigation?
300
One these age structure diagrams, what group in the population do the red bars represent?
What are children or pre-reproductive age group?
300
This is the #1 threat to biodiversity today.
What is habitat destruction?
400
This biogeochemical cycle relies heavily on photosynthesis and cellular respiration.
What is the carbon cycle?
400
This is the "waste" product or emission from a hydrogen fuel cell.
What is water?
400
This layer of the atmosphere contains the ozone layer.
What is the stratosphere?
400
This is equal to 2.1 for the world.
What is replacement level fertility?
400
The combustion of fossil fuels is a major source of this greenhouse gas.
What is carbon dioxide?
500
Species of warbler birds will share different parts of a tree so that they don't have to compete against each other for habitat. This is an example of
What is resource portioning?
500
Identify one energy source that does not rely on turbine technology for the production of electricity.
Solar (PV) and hydrogen fuel cells
500
This is the reason that earth experience seasons.
What is earth's axial tilt?
500
During this stage of demographic transition, the total fertility rate is less than 2.1
What is Stage 5?
500
This phenomena occurs when coral expel algae from inside their structure, causing them to turn white.
What is coral bleaching?