Human Populations
Post-Industrial Nations like South Korea and the United States have a population pyramid in what shape?
Half Circle with a tapered bottom
This farming practice grows a single crop species over a large area, maximizing yield but increasing vulnerability to pests and disease.
Monoculture
This process describes how toxins like mercury and DDT become increasingly concentrated at higher trophic levels.
Biomagnification
The goal of nearly any type of powerplant is to heat up what in order to spin a turbine?
Water
The name of the ecological zone in the deepest parts of the ocean
Benthic
How has education, especially of women, impacted population growth?
Led to a decrease in population
Animal agriculture contributes to climate change largely through this potent greenhouse gas, released during livestock digestion and manure decomposition
Methane (CH4)
This fishing method drags a large weighted net along the ocean floor, devastating benthic habitats and generating massive bycatch.
Bottom Trawling
In a nuclear fission reactor, these rod-shaped devices absorb excess neutrons to slow or stop the chain reaction.
Control Rods
What is the specific uranium isotope used in most nuclear power plants?
Uranium-235
The term used to estimate the amount of time it takes for a population to increase to twice its current amount
Doubling Time
41% of farmland in the United States is used to grow food to feed what livestock animal?
Cattle
This dose-response metric represents the amount of a substance required to kill 50% of a test population and is used to compare the toxicity of different chemicals.
LD50
If coal is made from trees, what is oil made from?
What era in Earth's history does most of our liquid oil date back to?
Mesozoic (252 to 66 million years ago)
This demographic concept describes the average number of children a woman is expected to have over her lifetime.
Total Fertility Rate (TFR)
A sample of dirt is made up of 35% clay, 40% silt and 25% sand. What kind of dirt is it?
Clay Loam
An economic and environmental concept where individuals, acting in their own self-interest, overuse and deplete a shared, finite resource, ultimately destroying it for everyone
Tragedy of the Commons
This type of radioactive decay has the greatest penetrating power, requires thick lead or concrete shielding to block,
Neutron
What is one kind of animal that produces neurotoxins?
Snakes, Spiders, Pufferfish
This term describes the fertility rate at which a population exactly replaces itself from one generation to the next, approximately 2.1 children per woman.
Replacement Fertility Rate
This process, caused by overgrazing, poor irrigation, and deforestation, converts once-productive dryland into barren, unproductive land.
Desertification
What are endocrine disruptors?
Chemicals that interfere with hormones
The Carboniferous, the time period where most coal comes from, can be split into two sub periods: the Mississippian and...
Pennsylvanian
For how many millions of years did the Carboniferous period last?
60 million (358.9 to 298.9 million years ago)