Which phylum is strictly marine with no freshwater

or terrestrial forms?
a. Echinodermata
b. Platyhelminthes
c. Cnidaria
d. Mollusca
e. Annelida


Answer: a

Biology & Microbiology

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Which area of the brain helps to translate thoughts into speech by controlling tongue, throat, and lip muscles?

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What should one do if the results of an experiment consistently do not support the original hypothesis?

A) Change the hypothesis to match the results. B) Change the results to match the hypothesis. C) Accept the original hypothesis. D) Reject the original hypothesis and formulate a new hypothesis.

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During a drought on the Galapagos islands, finches with larger beaks were able to crack the large tough seeds produced by plants that survived the dry conditions.  This is an example of ________.

A. stabilizing selection B. a founder effect C. directional selection D. disruptive selection E. genetic drift

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Half of the body's magnesium is stored in the:

A) bones. B) kidneys. C) skeletal muscle. D) extracellular fluid.

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