Most plants would grow best in a soil with ____

a. very small air spaces
b. relatively large air spaces
c. air spaces filled almost entirely with water
d. various sizes of air spaces
e. no air spaces


ANSWER: d

Biology & Microbiology

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True or False. Only homologous characters are useful in constructing phylogenetic trees

A. true B. false

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The most common cause of low sperm count in males is _____

a. varicocele b. undescended testicles

c. testicular failure d. semen disorders e. obstructions

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The CDC is located in

A) Atlanta, GA. B) Washington, DC. C) New York City, NY. D) Los Angeles, CA. E) Chicago, IL.

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Animals with closed circulatory systems are more successful than animals with open circulatory systems.

Answer the following statement true (T) or false (F)

Biology & Microbiology