About half of Earth's crust consists of compounds containing
A) carbon dioxide.
B) ozone.
C) oxygen.
D) nitrogen.
E) argon.
C
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The temperature scale that sets freezing of pure water at 32o F:
a. Kelvin b. Fahrenheit c. Celsius d. British
Which of the following is a byproduct in the production of soaps?
A) glycerol B) triglycerides C) ethanol D) none of these
The predominate system of agriculture practiced in Subsaharan Africa is
A) subsistence cultivation. B) intensive subsistence wet rice dominant. C) mixed crop and livestock. D) pastoral nomadism. E) dairy.
Which classification scheme is correct taxonomy going from general to specific? (NOT all categories are considered.)
a) Kingdom, family, order, phylum, species, class b) Species, genus, family, phylum, order, kingdom c) Order, family, class, kingdom, phylum, class d) Kingdom, phylum, class, order, family, genus, species e) Kingdom, phylum, order, class, species, genus