Discuss the effects of acid precipitation on the environment
What will be an ideal response?
Answer: Acid precipitation reaching the surface eventually feeds into the hydrologic system. Though some water falls directly onto lakes and rivers, the majority gets into them indirectly as soil or groundwater. Despite the indirect input into the surface waters, however, the water retains its acidity as it flows beneath the surface and eventually enters lakes and rivers. Through time, the surface water system becomes so acidic that it is inhospitable to life. At its worst, acidification can render lakes and rivers completely devoid of fish and aquatic birds.
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Alley cropping, terracing, and contour planting are all methods that help reduce ____________________.
Fill in the blank(s) with the appropriate word(s).
As accessibility and utility decline in a concentric zone model of the city, land use generally changes from
A) high-volume retailing to residential. B) residential to warehousing. C) factories to high-volume retailing. D) warehousing to factories.
Which one of the following contains all of the others?
a. Atom b. Community c. Cell d. Population e. Molecule
What is a nation-state?
A) a large cultural group with many different sociocultural traits and its own fully independent political territory B) a large cultural group that possesses a homeland within a larger country C) a large group of people with shared sociocultural traits and a political identity with clear territorial boundaries D) a a cultural group with shared sociocultural traits that poses a homeland within a larger country E) a country that has two or more states, for example, the U.S.