Natural ecological restoration of riparian areas can happen if
a. enough chemical fertilizer is applied
b. there is aggressive planting of native trees and shrubs
c. the native fish in the adjacent stream or river are restocked
d. protecting overgrazed land by moving cattle around
e. cloud seeding is performed
D
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Which type of forest is considered a reservoir of biodiversity?
a. old-growth b. second-growth c. Commercial d. tree plantation e. All forests are reservoirs of biodiversity.
How much has CO2 varied in the Vostok record? What were the highest and lowest values? What was the range of CO2 values?
Examine Figure 18.2. The Vostok ice core is 3310 m (10,860 ft) long. The full record extends back to 422,000 years before the present. The figure shows CO2 in parts per million (ppm) and temperature anomalies in Celsius degrees. What will be an ideal response?
Lightning, thunder, hail, and occasionally tornadoes are associated with which cloud type?
A. nimbostratus B. cirrostratus C. cumulonimbus D. cumulus E. altocirrus
Which of the following folklore forecasts is least accurate?
A) "Red sky at night, sailor's delight." B) halos and rain prediction C) Candlemas/Groundhog Day D) "When spiders' webs in the air do fly..." E) "Red sky at morning, sailor take warning."