One millimeter (mm) is equal to how many micrometers (?m)?
a. 100
b. 10
c. 1/10
d. 1000
Answer: d. 1000
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Which of the following statements regarding evolutionary relationships among land plants is correct? (Select all correct answer options.)
A. The ancestor of all land plants was a green alga. B. Bryophytes and vascular plants together form a monophyletic group. C. Vascular plants diverged more recently than bryophytes. D. Bryophytes form a monophyletic group. E. Vascular plants evolved from mosses.
An effective means used early in the 19th century to clear water of the majority of bacteria was the use of
A. chlorine. B. iodine. C. alcohol. D. sand filters
WHich of the following glands may function in helping to control the reproductive cycle?
a. thyroid b. pineal c. thymus d. pancreas e. kidney
If a diploid cell goes through meiosis it will generate
a)two haploid cells. b)four diploid cells. c)two diploid cells. d)four haploid cells. e)This is not possible.