Barrons AP Environmental Science

(A) Oil is the primary energy source for the world today with the United States at approximately 40% dependency ...

(E) Wherever on this graph the slope of the line is zero (horizontal), there is no population growth ...

(E) Primary productivity is the amount of biomass produced through photosynthesis per unit area per time by ...

(C) A watt is a unit of power. ...

(E) A La Niña effect may be defined as a drop in average sea-surface temperatures to more than 0.7°F ...

(A) In order to balance the excess heating near the equator and cooling at the poles, both the atmosphere and the ...

(A) An important chemical property of persistent organic pollutants is their lipid (oil or fat) solubilit ...

(E) The geologic time scale is a system that describes the timing and relationships between events that ...

(C) Temperate deciduous forests have warm summers and cold winters. Deciduous trees escape these winters by ...

(B) The great ocean conveyor belt transfers warm water from the Pacific Ocean to the Atlantic as a ...

(D) Crops generally have higher yields when more CO 2 is available. However, while crops may be mor ...

(C) Automobiles and other forms of transportation are responsible for approximately one-third of human-made nitroge ...

(B) The ecological footprint measures how much land and water area a human population requires to produ ...

(C) Lichens are organisms formed by the mutualistic combination of an alga and a fungus. Lacking roots, stems, and le ...

(B) It is thought that improvements to the Erie Canal in 1919 allowed sea lampreys to spread from Lak ...

(C) The Resource Conservation and Recovery Act (RCRA) gives the Environmental Protection Agency (EPA) the aut ...

(E) While deforestation threatens ecosystems across the globe, it’s particularly destructive to tropical rainfo ...

(A) Cinder cones are one of the most common types of volcanoes. A steep, conical hill of volcanic fragment ...

(E) The U.S. Fish and Wildlife Service is a bureau within the Department of the Interior, and is the principa ...

(D) In many areas, fluoride (F–) is added to water after the disinfection process with the goal of pr ...