How big are most cells?

a. 10-20 nanometers
b. 10-20 micrometers
c. 10-20 millimeters
d. 10-20 centimeters
e. 10-20 meters


B

Biology & Microbiology

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In the U.S. over ____ of the coastal wetland habitats have been destroyed

a. b. c. d. e.

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With injury, illness, anxiety, or starvation

a. cortisol levels in the blood increase dramatically. b. the adrenal medulla releases norepinephrine and epinephrine. c. the respiratory rate increases. d. the fight or flight response is activated. e. all of these occur

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Plants became erect, taller, and branched as a result

of their ability to produce a. cutin. b. lignin. c. cellulose. d. complex carbohydrates. e. suberin.

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What is a 15-meter tall tree fern?

A. A gametophyte B. A sporophyte C. Haploid D. Produced by meiosis

Biology & Microbiology