A compound that causes leaves to fall off plants is a(n) A) ...

[penguins]

A compound that causes leaves to fall off plants is a(n)
 
  A) insecticide.
  B) defoliant.
  C) herbicide.
  D) pesticide.

Question 2

Which of the following is considered to be a disadvantage of fluoridating drinking water?
 
  A) The concentration of fluoride in drinking water is usually 0.7-1.0 ppm.
  B) Some hydroxide ions in tooth enamel are replaced by fluoride ions.
  C) High fluoride consumption in early childhood can cause mottling of the teeth.
  D) Treatment with fluoride results in harder tooth enamel.

[LegendaryAnswers]

Answer to Question 1

B

Answer to Question 2

C

[penguins]

Excellent

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