Which of the following is the correct way to write the formula of the compound formed between the calcium ion and the sulfate ion?
A) Ca2(SO4)2
B) Ca2SO4
C) Ca(SO4)2
D) CaSO4
D
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Davisain theory is usually referred to as the _______.
a - equilibrium theory b - geomorphic cycle c - rejuvenation theory d - idea of concave slopes e - stream development theorem
Which of the following is true of the summer solstice?
A) The Northern Hemisphere points away from the sun. B) Winter begins in the Northern Hemisphere; summer begins in the Southern Hemisphere. C) The equator faces the sun directly. D) Neither pole tilts toward the sun. E) The Northern Hemisphere points towards the sun
The earth's radiative equilibrium temperature is:
a. the temperature at which the earth is absorbing solar radiation and emitting infrared radiation at equal rates. b. the temperature at which the earth is radiating energy at maximum intensity. c. the average temperature the earth must maintain to prevent the oceans from freezing solid. d. the temperature at which rates of evaporation and condensation on the earth are in balance.
Which is NOT TRUE regarding land degradation?
A) Poverty is a major cause of land degradation. B) Land degradation can lead to landslides. C) Soil compaction is one form of land degradation. D) Land-use change has universally negative effects on human well-being. E) Demand for more food production contributes to overexploitation of good agricultural soil.