Which class of compounds is not widespread in nature, and has little importance in biochemistry?

A) alkanes
B) alkenes
C) alkynes
D) arenes


C

Environmental & Atmospheric Sciences

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Even-aged and uneven-aged management are used in

A) the lobster industry. B) silviculture. C) fishing industries. D) habitat restoration.

Environmental & Atmospheric Sciences

The configuration at which carbon of a pentose determines if the pentose has the D or L configuration?

A) C-1 B) C-3 C) C-4 D) C-5

Environmental & Atmospheric Sciences

Which of the following are NOT common in landscapes formed by carbonate rocks?

A. sinkholes B. outcrops with pits or holes C. fractures widened by dissolution D. well-defined layers (beds) E. All of these are common in carbonate landscapes.

Environmental & Atmospheric Sciences

Faults that typically move older rock on top of younger rock are

A. strike-slip faults B. normal faults C. thrust faults

Environmental & Atmospheric Sciences