Climate change and human activity like overgrazing of grasslands is leading to large areas subject to "desertification" where native grass cover dies out during drought periods, exposing soil to erosion. What is potentially the greatest initial soil erosion potential during this type of an event?
a. sand blown in from adjacent deserts
b. loss of topsoil by wind erosion on a large scale
c. growth of non-native shrubs shading the ground, d. further killing the grasses
b. loss of topsoil by wind erosion on a large scale
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Compare and contrast the Darwin-Wallace mechanisms of natural selection and evolution with
Lamarck’s theory of inheritance of acquired characteristics. Explain how both of these concepts might apply to the development of long necks in giraffes. What will be an ideal response?
The National Environmental Policy Act (NEPA) ________
A) altered the amount of chemicals allowed in water as a result of industrial pollution B) put all federal land under stringent environmental protection C) was signed into law by Bill Clinton D) required environmental impact statements for any projects funded by the U.S. government E) requires compensation to be given to anyone harmed by deliberate pollution from any business or corporate entity
The beach face is located in which of the following zones?
a. backshore b. foreshore c. offshore d. none of the above
In which of the following time periods did coral, clams, fish, plants, and insects become abundant?
A. Precambrian B. Cenozoic C. Mesozoic D. Paleozoic