A commonly pinkish mineral with light-colored wavy lines is
A. quartz.
B. olivine.
C. amphibole.
D. pyroxene.
E. potassium feldspar.
Answer: E
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Indicate whether the statement is true or false
The principal factors in the formation of photochemical smog are high concentrations of nitrogen oxides and
A. reduced precipitation. B. high levels of carbon monoxide. C. high relative humidity. D. strong sunlight.
Which of the following is not true about protecting biodiversity?
A) Once a species is lost from an area, it isn't typically re-introduced because doing so would endanger other species in that ecosystem. B) The mining industry exerts a serious threat to biodiversity. C) Gene and seed banks provide insurance for the long-term survival of species. D) The cultivation of densely planted energy crops grown in tropical ecosystems to provide biofuels is a threat to biodiversity.
Four of the following are characteristics that make some species especially vulnerable to ecological and biological extinction. Select the exception.
A. low reproductive rates B. small territories C. feeds at high trophic level D. narrow distribution E. rare