If forests are strictly managed according to the maximum sustainable yield model, some biodiversity would still be lost because ________
A) habitats for nesting birds are lost
B) nearly all predators will be excluded
C) forests are more susceptible to herbivore damage
D) species whose habitat depends on mature trees in the top canopy layer will be excluded
E) all the trees are of mature size leaving no room for new seedlings
D
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Meteorologists refer to an imaginary volume of air enclosed in a thin elastic cover as a ________.
Fill in the blank with the correct word.
Carbon dioxide levels in the atmosphere are rising due to the burning of fossil fuels. How might this increased level of carbon dioxide affect rates of weathering?
Most of the successful urban plans that have made cities more livable have designed space to centered on
A) efficient automobile traffic. B) the movements and interactions of people. C) housing and places for people to park their cars. D) oceans as a common source for water and mode of transportation.
An estimated ________ people could be displaced by a sea level rise of 1.0 m (3.2 ft)
A) 1,000,000 B) 10,000,000 C) 100,000,000 D) 130,000,000