Show:
Air Quality
Dead Zones
Exploitation
Biodiversity
Water
100
If you want to be exposed to higher concentrations of air pollutants, go here:
Indoors
100
What is the primary limiting factor for all plants?
Nutrients (such as nitrogen, phosphorous etc)
100
What are the four types of overfishing?
Stock overfishing, Growth overfishing, Recruitment overfishing, Ecosystem overfishing
100
What is biodiversity?
The variety of earth’s species, the genes they contain, the ecosystems in which they live and the ecosystem processes which sustain life.
100
The main sink (use) of freshwater
Irrigation
200
Name the US-EPA's main "criteria pollutants"
Carbon Monoxide (CO), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2), Ground-Level Ozone (O3), Particulate Matter (PM10), Lead (Pb)
200
A main compound in fertilizer:
Ammonia (NH3-)
200
What is the largest catch that can be taken from a species' stock over an indefinite period without endangering it called?
Maximum sustainable yield
200
Most of the world's marine species are found in this zone:
Coastal Zone (High tide to continental shelf)
200
Activities that use water and then return it to the stream or aquifer are called what?
Nonconsumptive water use
300
At ground level, ozone acts as this type of pollutant.
A secondary pollutant
300
Enhanced nutrient loading occurs because of these two factors:
Runoff and atmospheric deposition
300
To sustain catch loads despite decreasing productivity, fishermen have resorted to doing this:
Fishing down the foodchain
300
What is the biggest threat to biodiversity?
Habitat Degradation. Other factors: Invasive species, Pollution, Climate change, Overfishing/Overexploitation
300
The continent with the least access to safe drinking water
Africa
400
Aldehydes, ketones, and peroxyacetyle nitrates are all examples of cancer-causing substances, also known as what?
Carcinogens
400
What are the main sources of nutrients delivered to the Gulf Coast?
Phosphorous - pasture (manure), Nitrogen - corn and soybean crops (agriculture)
400
The depletion of a shared resource by individuals acting independently and rationally according to each one's self-interest, despite an understanding that depleting said common resource is contrary to the group's long-term best interests
Tragedy of the commons
400
What is the human-assisted pathway that spreads the most invasive species?
Shipping
400
Rainfall - Potential evapotranspiration =
Water balance coefficient
500
The main source of lead in the U.S.
Leaded aviation gas
500
HABs stand for what?
Harmful algal blooms
500
What are the two types of common management techniques for fisheries, and provide an example for each.
Direct – Limited entry (MPAs), catch quotas Indirect – Vessel licensing, catch techniques (no trawling etc)
500
What's the difference between an alien species and an invasive species?
An invasive species is an alien species that has become harmful to the environment, or at the least disrupts the original balance of the environment
500
What are some disadvantages of withdrawing groundwater?
Aquifer depletion, Sinking of land (subsidence), Pollution of aquifers lasts decades or centuries, Deeper wells are nonrenewable