Biomes
This cold biome contains permafrost, low biodiversity, and is mostly found in the northernmost parts of the world like Alaska and Siberia.
What is Tundra
This fossil fuel is the most used for electricity in the U.S.
What is coal
This term means the number of people living in a given area.
What is population density
This term describes the long-term average of temperature and precipitation in a region.
What is climate
This is anything harmful added to air, water, or land.
What is pollution
This biome is characterized by low precipitation, hot days, and cold nights, and is home to organisms like cacti and reptiles.
What is Desert
This renewable source uses sunlight to generate electricity.
What is solar power
This is the formula for calculating population growth rate.
What is (birth rate – death rate) ÷ 10
This is the name of the natural warming of the Earth caused by gases like CO₂ and methane.
What is the greenhouse effect
This air pollutant comes from car exhaust and can lead to smog.
What is nitrogen oxide (NOₓ)
Known for having nutrient-poor soil but the highest biodiversity of any terrestrial biome, this biome is found near the equator.
What is Tropical Rainforest
This process releases sulfur dioxide, mercury, and carbon dioxide, making it one of the dirtiest methods of energy production.
What is Coal Combustion
This term refers to the maximum number of individuals an environment can support long-term.
What is carrying capacity
This international agreement aimed to reduce greenhouse gas emissions in 1997.
What is the Kyoto Protocol
This type of pollution comes from a single, identifiable source, like a pipe or factory drain.
What is point source pollution
This biome features fertile soils, seasonal droughts, and large herbivores like bison or antelope.
What is Grassland
This 2011 nuclear disaster in Japan was caused by an earthquake and tsunami, leading to reactor meltdowns and radiation leaks.
What is the Fukushima Daiichi disaster?
This term describes the average number of children a woman will have in her lifetime.
What is total fertility rate (TFR)
This periodic ocean event warms the Pacific and disrupts global weather patterns.
What is El Niño
This pollutant forms when sunlight reacts with emissions, creating harmful ground-level ozone.
What is photochemical smog
This coastal biome is flooded by tides and acts as a nursery for many marine species.
What is Estuary
This term refers to the comparison of energy output to the energy input required to produce it, and is used to evaluate energy sources.
What is energy return on investment (EROI or EROEI)?
This model shows how populations change as countries develop economically.
What is Demographic Transition Model
This type of climate event is becoming more common due to global warming and includes things like stronger storms and longer droughts.
What are extreme weather events
This 1970 U.S. law set limits on pollutants in air and gave the EPA authority to enforce them.
What is the Clean Air Act