Barrons AP Environmental Science

(B) Remediation technologies are those that render harmful or hazardous substances harmless after they enter ...

(C) Total fertility is 2.5 children per woman globally. Africa remains the region with the highest fertility ...

(E) For the poor in developing countries (urban and rural), wood is usually the principal source of energy for ...

(C) During the 1940s and 1950s, the Hooker Chemical Company dumped approximately 21,000 tons of organic solvents ...

(D) From 1932 to 1968, Chisso Corporation (a petrochemical and plastics manufacturer) dumped an estimated 27 ...

(E) In 1979, a minor malfunction occurred in the system that fed water to the steam generators at the Thre ...

(A) In 1984, 40 tons of cyanide and other lethal gases began spewing from Union Carbide Corporation’s pestic ...

(B) In 1986, a reactor exploded in the town of Chernobyl in Ukraine and released 30 to 40 times the rad ...

(C) Drift netting is a fishing technique in which nets, called drift nets, are allowed to drift free in ...

(B) The ozone layer is a layer in Earth’s atmosphere that contains relatively high concentrations of ozon ...

(A) The troposphere begins at the surface of Earth and extends to about 4 miles (7 km) at the poles to approxima ...

(B) Stratospheric ozone depletion describes two distinct but related phenomena observed since the late 197 ...

(A) Organisms that live in specialized niches are not adapted to a wide range of environmental circumstances ...

(D) China is the dominant recipient of the world’s electronic waste (e- waste), with an estimated one billion ...

(B) Sewage is spread onto the surface of a trickling filter (oxidizing) bed, a deep bed made up of coal ...

(B) Almost 60% of all the world’s freshwater withdrawals go toward irrigation purposes. Rice production uses the ...

(A) A study by Consumer Reports found that two-thirds of domestic produce had more toxic pesticide residu ...

(C) Emissions trading (also known as cap-and-trade) is an approach used to control pollution by providing ...

(C) To get the estimate of the population size N, multiply the number marked in the first catch, M 1 , by ...

(B) Population density is calculated as population size divided by area: 750 butterflies/2 hectares = 375 butt ...