Many ecosystems are damaged by attempts to make a quick profit because ________
A) the prices of most natural goods continue to fall
B) the value of ecosystem services is underappreciated
C) natural services are valued more than natural goods
D) ecosystem services require sustained human development
B
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When cultivars require adaptations not currently in their genetics, plant breeders
A) may treat the seeds with chemicals that cause mutations in order to try to generate new forms. B) often introduce traits found in wild varieties of the plant. C) may try to introduce genetic traits found in pests of the crops. D) use fertilizers to change the chemistry of the crops.
The primary control of glacial-interglacial episodes seems to be variations in the Earth's orbit and inclination to the sun.
Answer the following statement true (T) or false (F)
The surface pressures at the bases of warm and cold columns of air are equal. Air pressure in the warm column of air will ____ with increasing height ____ than in the cold column
A) decrease; more rapidly B) decrease; more slowly C) increase; more rapidly D) increase; more slowly
Computer models used to predict global warming take into consideration:
A) surface albedo B) elevation C) latitude D) all of the above