Urbaniz.& Cities
_________ is the spread of low-density development outward from a city center.
Urban Sprawl
What is the name for toxic substances that cause changes to DNA.
Mutagens
A ______ is an area of land that drains into a common water body.
Watershed
What is the name for the global ocean conveyor belt driven by temperature and salinity?
Thermohaline Circulation
The atmospheric layer where weather occurs.
Troposphere
_________: planning strategy that promotes walkable, compact, mixed-use neighborhoods.
Smart Growth
What is the term to describe the dose of a toxin that kills 50% of a population?
LD50
__________ is a type of nutrient pollution that causes algae blooms and hypoxic conditions in water.
Eutrophication
______ is an area that where nutrient-rich deep water rises to the surface.
Upwelling Zones
Ozone-depleting substances found in old sprays and refrigerants.
CFCs
________: green zones that surround urban areas to limit expansion.
Greenbelts
What is the term that describes toxins becoming more concentrated at higher trophic levels?
Biomagification
A _________ is a groundwater source that is trapped between impermeable rock layers.
Confined Aquifer
Estuaries
This is the type of energy trapped by greenhouse gases.
Infrared Radiation
_________: advising cities on land use, transport and public spaces/
City Planning
_____________ are toxins that interfere with hormones.
Endocrine Disruptors
This is the largest aquifer in the United States and is currently being overdrawn.
Ogallala Aquifer
Marine structures made of coral animals; high biodiversity zones.
Coral reefs
What is the name of the international treaty that got rid of CFCs?
Montreal Protocol
_____________: Designing neighborhoods that are walkable and transit-friendly.
New Urbanism
The ____________ is when combined toxins cause more harm than when they are by themselves.
Synergistic Effect
What percentage of the Earth is freshwater?
2.5
An area where extraction (fishing) is not allowed. Goal:rebuild marine biodiversity.
Marine Reserve
What is the term used to describe the lowering of the oceans pH due to excess CO2 absorption?
Ocean Acidification