Structure of communities may be affected by

a. temperatures.
b. sunlight intensity.
c. humidity.
d. condition of the soil.
e. all of these


E

Biology & Microbiology

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Our ability to respond to moderate heat and cold is due to

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The lampreys are unusual vertebrates in that they have no

a. eyes. b. jaws. c. gill slits. d. mouth.

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Microevolution is change in the __________ of a population.

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

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Which of the following is a common source of antibiotics?

A) Acetobacter B) Bacillus species C) Pseudomonas D) Streptococcus thermophilus E) Streptomyces

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