In order for the world\'s population to stabilize at the level of 10 billion yea

Question

In order for the world's population to stabilize at the level of 10 billion year 2200, the growth rate must: a. increase b. decrease and then increase c. remain stable d. decrease True or False: Over time, OPEC's portion of the world's oil reserves is expected to decrease from its current level at 75%. The distribution of water at the earth's surface is: a. 66% seawater, 32% glaciers & ice caps, 1% fresh b. 70% seawater, 30% fresh c. 90% seawater, 8% glaciers & ice caps, 2% fresh d. 97% seawater, 2% glaciers & ice caps, 1% fresh The design of engineering structures should take into consideration: a. costs of construction b. magnitude-frequency relationships of geologic events c. potential risks to life and property d. all of the above Which of the following are all greenhouse gases released by human activities? a. CO, CO_2, Ar b. CO_2, N_20, CH_4 c. CO_2, N_2, H_2O d. He, N_2O, N_O2 True or False: Greenhouse gases work by trapping infrared radiation emitted from the earth's surface. Which of the following planets is a gas giant? a. Earth b. Saturn c. Venus. d. Mars True or False: The gas giant planets lost most of their volatile components, like water, methane and ammonia, during their formation. Differentiation refers to the process in which the earth: a. accreted from smaller terrestrial bodies. b. became chemically segregated due to melting and sinking of iron c. was bombarded by frequent meteorite collisions d. became a separate and distinct planetary body along with the other terrestrial planets The lithosphere is best defined as: a. a thick layer of material of low density that accumulated near the earth's surface during differentiation b. a thin layer within the mantle that is near the melting point and, therefore, deforms as a plastic c. a thin rigid upper layer of the earth that moves over the earth's surface above the plastic asthenosphere d. the boundary between the crust and the mantle Which of the following is not true: a. Most of the world's great deserts are located at 30 degree N or 30 degree S. b. The Coriolis Effect impacts atmospheric circulation as air masses move north or south from the equator. c. Direct radiation from the sun causes moist warm air to rise at the equator. d. The oceans are the main means of heat transfer from the tropics to the temperate zones. e. None of the above. f. All of the above True or False: The most important mechanism for the transfer of heat within the earth is convection. According to the theory of plate descending limbs of crustal material may be present at _____

Explanation / Answer

a. increase a. true d. 97% sea water, 2% glaciers and ice caps, 1% fresh d. all of the above b. CO2,N2O,CH4 True b. Saturn . Reason: jupiter and saturn are the gas giants in our solar system false. reason; these atmospheres actually gain these volatile gases d. beacame a seperate and distinct planetary body along with the other terrestrial planets c. thin rigid upper layer of the earth that moves over the earth's surface above the plastic asthenosphere e. none of the above true

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