Unit 3: Populations
What is the following equation name?
70/r = doubling time in years, where r = % growth rate
Rule of 70
This soil horizon contains the most organic matter and is found at the surface.
O horizon
This technique reduces pest resistance by rotating chemical treatments with other control methods.
Integrated Pest Management (IPM)
This fossil fuel is primarily used for electricity generation in the U.S..
Petroleum
This is the main cause of sea level rise.
melting glaciers and thermal expansion of oceans
What is carrying capacity?
The maximum population that an area can sustainably withstand and support.
These three particles determine soil texture when arranged from largest to smallest.
Sand, silt, clay
This agricultural development from the 20th century led to increased crop yields using synthetic fertilizers, mechanization, and high-yield varieties.
Green Revolution
This nonrenewable energy resource powers nuclear reactors through radioactive decay.
Uranium
This process occurs when rising global temperatures cause frozen ground to melt, releasing carbon that was trapped in the soil back into the atmosphere.
Positive Feedback Loop
Humans follow this survivorship curve
Type 1
This atmospheric phenomenon causes wind to deflect due to Earth’s rotation.
Coriolis Effect
This form of sustainable agriculture plants crops in strips along the contours of slopes to reduce erosion.
Contour plowing
These fuel cells use hydrogen to generate electricity but are expensive and hard to store.
Hydrogen Fuel Cells
This act banned the use of certain ozone-depleting substances and is often cited as a model for global cooperation.
Montreal Protocol
This species can survive in a variety of environmental conditions and use a variety of resources.
Generalist Species
These are the three main types of rocks in the rock cycle.
igneous, sedimentary, and metamorphic
This side effect of industrial agriculture occurs when water-soluble nutrients are washed out of soil into groundwater.
Leaching
This method combines electricity generation with the use of excess heat for efficiency.
Cogeneration
This phenomenon results from the warming and expansion of ocean water and is a major contributor to sea level rise.
Thermal Expansion
This demographic diagram shows a wide base, suggesting high birth rates and rapid population growth.
Population pyramid for a developing country.
This process involves chemical reactions that break down rock, such as oxidation or hydrolysis.
This federal law ensures public participation and environmental review before approving mining operations on federal land.
National Environmental Policy Act (NEPA)
This law states that during energy transfer, some energy becomes unavailable for work, often lost as heat.
Second Law of Thermodynamics
This climate-related impact occurs when rising sea levels, droughts, or extreme weather force people to leave their homes, often without crossing international borders.
Climate displacement