As humans continue to use fossil fuels as a primary source of energy, the amount of carbon entering the atmosphere from fossil fuel combustion will continue to increase dramatically. What is the effect of large-scale deforestation on the carbon in the atmosphere?
a. Because trees are a major sink for atmospheric carbon, fewer trees will result in less carbon being removed from the atmosphere for photosynthesis.
b. As trees are removed, there is more room for carbon to enter the soil directly and be used by other plants.
c. Because trees produce carbon dioxide, the amount of carbon in the atmosphere will decrease with their wide-scale removal.
d. The large-scale removal of forests does not have any real effect on atmospheric carbon, because carbon dioxide is not stored in trees.
Answer: a. Because trees are a major sink for atmospheric carbon, fewer trees will result in less carbon being removed from the atmosphere for photosynthesis.
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Figure 25.6 Mt. Rainier National Park Topographic Map: from Columbia Crest to McClure Rock.
Use the following topographic maps and a ruler (inches or cm) to measure the map distance between the points indicated. Noting the RF scales posted on each map, calculate the approximate ground distance (miles or kilometers). Keep in mind that there are 63,360 inches in a mile: 12 in./ft * 5280 ft/ mile. Compare results with the graphic scale. What will be an ideal response?