Several times in Earth's history, land masses have converged as supercontinents. ____________________ and ____________________ are examples.

Fill in the blank(s) with the appropriate word(s).


Gondwana, Pangea; Pangea, Gondwana

Biology & Microbiology

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The ratio of toxic dose to therapeutic dose is called the

A. therapeutic index. B. phenol coefficient. C. susceptibility quotient. D. toxicity index.

Biology & Microbiology

Spatial perception and the recognition of familiar objects require activity in which of the following cortical regions?

a. Visual association areas b. Primary olfactory cortex c. Orbitofrontal cortex d. Auditory association areas

Biology & Microbiology

Alcoholic fermentation is the basis for

(a) bread baking. (b) beer brewing. (c) ethanol fuel production. (d) all of the above.

Biology & Microbiology

Covalent bonds ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology