Show:
Air Quality
Dead Zones
Exploitation
Biodiversity
Water Treatment
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
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
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 minus 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
This type of reserve acts as insurance for resilience to environmental variability, not just fishing
Marine Protected Areas (MPAs)
500
A recent paper predicts that this type of biome will have the highest percentage of area converted to agricultural/urban land in the next 40 years
Tropical and sub-tropical coniferous forests
500
What are the four disadvantages of withdrawing groundwater?
Aquifer depletion from overpumping Sinking of land (subsidence) from overpumping Pollution of aquifers lasts decades or centuries Deeper wells are nonrenewable