Ecology
The layer of gases that surrounds the Earth and protects our planet.
Atmosphere
Energy sources that take millions of years to form.
Nonrenewable
Name the 3 main greenhouse gases.
carbon dioxide, methane, nitrous oxide
The expansion of a city beyond its borders.
Urban Sprawl
Nonliving parts of an ecosystem, like sunlight, soil and water.
Abiotic Factors
Name the 3 types of fossil fuels.
Coal, oil, natural gas
Where does methane come from?
Livestock and landfills
What are the 3 biggest land uses in the United States?
Cropland, rangeland and forestland
What is trophic level #1 on a food web?
Producers
Name 2 disadvantages of nuclear energy?
produces nuclear waste, expensive
What are the 2 biggest natural carbon sinks?
Forests and oceans
The process of growing crops and raising animals for food.
Agriculture
What are the 5 levels of ecology from largest to smallest?
Biome, Ecosystem, Community, Population, Organism
Name 4 examples of renewable energy.
Wind, solar, hydro, geothermal, biomass, ocean
Name 3 effects of climate change.
temperature rise, extreme weather, seal level rise, water availability, desertification, ocean acidification
Name 2 threats to cropland.
urban development, soil erosion, climate change
A predator is considered a _______ limiting factor.
Density dependent
What are 3 advantages to using renewable energy?
no air pollution, unlimited supply, no GH gases, natural
Name 3 solution for climate change.
renewable energy, reuse/recycle, upgraded transportation, carbon sinks, sustainable agriculture
Name 2 threats to rangeland and 1 solution.
threats: overgrazing, invasive species, climate change
solutions: limit herd sizes, fence in areas, kill invasive species