Unit 6: Energy
Unit 7: Atmospheric Pollution
Unit 8: Aquatic and Terrestrial Pollution
Unit 9: Global Change
Bonus
100

The highest efficiency nuclear fuels produce the most heat per unit time. In other words, they have the shortest ones of these.

Nuclear Half-Lives
100

Just down the road, I-394 is built with quiet pavement, minimizing this form of "air" pollution.

Noise Pollution

100

The most effective option in the "Reduce, Reuse, Recycle" trio

Reduce

100

Atmospheric deposition happens with all gases, but ocean acidification happens because of this one in particular.

Carbon Dioxide

100

This biome is characterized by hot dry summers and cool moist winters. It is rare, and is known as a chaparral in the US

Temperate Shrubland

200

Despite advances in fossil fuel based transportation and technology, half the worlds population still relies on this for energy.

Wood (fuel wood)

200

No-Burn Days can be announced to prevent forest fires, or to spare us the inhalation of pollutants getting trapped by this atmospheric effect.

Thermal Inversion

200

Sanitary landfills aren't much different than normal ones, apart from this extra step.

Covering with dirt

200

This type of radiation tries to leave earth, but some is stopped by a collection of greenhouse gases.

Infrared (heat)

200

High latitude river basins may not be the best choice for solar power, but they could use this type of power generation.

Hydroelectric

300

If you can afford the up-front cost, you could cut your dairy farm's energy bill dramatically by taking advantage of this, instead of shipping manure away as waste.

Anaerobic decomposition

300

In some areas, plants can get acid burns from all the sulfur dioxide being released into the atmosphere. These acidic chemicals are usually a byproduct of this pollutant.

Coal smoke (coal burning)

300

Battery acid and toxic metals leach into soil and waterways as a common result of this special type of solid waste.

E-Waste

300

Invasive plant species are particularly problematic because they are not the food of choice for local herbivores, lowering this coefficient of energy that gets passed from trophic level to trophic level.

10%

300

Particulate matter is hard to remove once it's in the atmosphere, but it can be removed from the source using these expensive devices.

Electrostatic Precipitators

400

If you get hot water from an electric company, you are likely utilizing this method of capturing heat during energy production.

Cogeneration

400

The Montreal Protocol saw many countries vow to protect the stratospheric ozone layer by swearing off these.

Chlorofluorocarbons (CFCs)

400
Check frequently for these in your water if you live near a mine.

Heavy Metals 

400

As ocean surfaces warm, these cyclic patterns in the South Pacific are intensifying.

El Niño and La Niña

400
If sewage is being dumped directly into a waterway, it is relatively easy to trace. If gases are coming from a landfill, the culprit is harder to identify because it is this type of pollutant.

Non-point source

500

Fuel cells can supply all of our energy needs, as long as we can afford them, and supply enough of these reactants.

Hydrogen and Oxygen

500

This threshold tells you if a particle is small enough to enter your bloodstream via the lungs, which causes many more issues than coughing. 

PM2.5

500

Check frequently for these in your water if you live near a cattle ranch.

Coliform bacteria

500

Local biodiversity is all but removed when mining companies access coal this way.

Mountaintop Removal

500

Grasslands are becoming endangered biomes largely due to this practice, which causes desertification.

Overgrazing