15.Which is the oldest sedimentary rock layer:A) FB) BC) CD) DE) E16.Which is the oldest fault:17.Which is older:18.A larger national park and a smaller national park, otherwise identical, are completelysurrounded by cornfields and Walmart parking lots, and have been surrounded for a century.You count the number of species of trees in each park. You probably will find:19.There are many greenhouse gases, including carbon dioxide (CO2), methane (CH4). andvaporized water (H2O). These and other greenhouse gases warm the Earth primarily by:A) Raising the atmospheric pressure, because squeezing air warms it, as we saw at theRedwoods.
B) Making more clouds, because clouds block the radiation from the planet, which is why cold,frosty nights are rare during cloudy weather.C) Absorbing some of the infrared radiation emitted from the Earth.D) Preventing convection currents that take heat aloft, in the same way that the glass of agreenhouse stops convection currents and so makes the air in the greenhouse warmer.E) Making politicians mad, so they give speeches that heat the air.20.The consensus of the world’s climate scientists, as generated by the UN-sponsoredIntergovernmental Panel on Climate Change (IPCC), is that:21.True or False: religion and science always disagree.
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