According to the International Union for Concerned Scientists in 2014, groups showing highest extinction risk are
A) cycads and conifers.
B) birds, amphibians, and freshwater fish.
C) corals and freshwater crabs.
D) invasive species in general.
B
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Spots of sunlight on the ground cast through openings between leaves in trees above are actually
A. images of the Sun. B. due to refraction of sunlight. C. part of a solar eclipse. D. all of the above
The heat energy released when water vapor changes to a liquid is called the latent heat of ____
A) evaporation B) sublimation C) vaporization D) condensation
Waste incinerators ________
A) extend the life of landfills by decreasing waste volume B) ultimately increase the use of fossil fuels to generate electricity C) are able to eliminate the disposal of municipal solid wastes (MSW) D) increase the volume of MSW that must be buried in landfills
Exurbs are downtown housing developments populated by people who used to live in the suburbs and have now moved to the central city.
Answer the following statement true (T) or false (F)