Which of the following trace elements needed by humans is commonly added to table salt?
A) iodine
B) iron
C) magnesium
D) fluoride
Answer: A
You might also like to view...
What percentage of the mammals evaluated for
their conservation status were found to be threatened?
a. 15% b. 22% c. 30% d. 47% e. 53%
Adam Jones and colleagues (2000 ) studied the mating behaviors of broad-nosed pipefish (Syngnathus typhle) in a laboratory situation. For which sex is sexual selection a more potent evolutionary force?
A) females B) males C) Both sexes are under equal sexual selection pressure. D) Neither sex is under sexual selection pressure.
Which of the following is not an invasive species?
A) cheatgrass B) purple loosestrife C) ring-necked duck D) Asian longhorned beetle
Four of the following are true of euglenids. Which statement is false?
A. Many move by pseudopods. B. Many contain chloroplasts. C. Can be mixtrophs. D. Belongs to the same group as kinetoplastids. E. Use a contractile vacuole to maintain water balance.