Overgrazing causes land degradation by
a. compacting the soil and preventing water infiltration.
b. increasing the slope of hillsides, accelerating erosion.
c. removing non-native species, allowing natives to take over.
d. All of the above
Answer: A
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After a winter storm, bright sunlight returns and the snow and ice on the road melt into liquid water. This is an example of
A) light energy converted to heat energy, changing the state of water. B) movement changing the position of snow and ice. C) matter changing the heat of the atmosphere. D) movement generating heat that changes the position of ice and snow.
Which of the following is an example of a network covalent solid?
A) diamond B) dry ice C) sodium D) sodium chloride
Which of the following is the conjugate base of H2PO4-?
A) H3PO4 B) HPO42- C) PO43- D) OH-
One method that humans use to modify the navigation channel of a bay and reduce beach loss is by using
A. jetties. B. loess. C. fjords. D. frost wedging. E. eustatic sea-level change.