Which of the choices is a diagnostic characteristic of a mineral?

a) Minerals are only made of organic material from living organisms
b) Minerals only occur as solids
c) Minerals may occur naturally or may be synthetically made.
d) Each mineral had a defining chemical composition with no possibility for variation or the substitution of elements.
e) Minerals lack a repetitive geometric structure.


b) Minerals only occur as solids

Environmental & Atmospheric Sciences

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If an organism's diploid cells have 40 chromosomes, then its haploid cells have

A) 80 chromosomes. B) 40 chromosomes. C) 20 chromosomes. D) none of the above

Environmental & Atmospheric Sciences

Whales are members of the Cetacea mammal order. Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Which of the following molecules has a linear structure?

A) acetylene B) benzene C) ethane D) ethylene

Environmental & Atmospheric Sciences

Which of the following explains why glycosides do not undergo mutarotation?

A) There is no longer an anomeric carbon. B) There are no longer any stereocenters. C) The ring structure does not open to become the open-chain structure. D) None of the above is correct.

Environmental & Atmospheric Sciences