Which of the following plants are widely planted in
cities because of their resistance to insect predators,
air pollution, and disease?
a. horsetails
b. ginkgos
c. pines
d. spruces
e. junipers
Answer: b
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Which of the following will grow in broth with 6.5% salt?
A. Lactococcus lactis B. Streptococcus mutans C. Enterococcus faecalis D. All of the choices are correct.
The evolutionary force that operates primarily through chance is
a. natural selection. b. genetic drift. c. isolation. d. mating preference. e. pregnancy.
A forest community consists of not only the trees and shrubs, but also the animals and microorganisms.
Answer the following statement true (T) or false (F)
Which of these is a correct statement about pH?
A) The pH of a solution increases as its acidity increases. B) The pH of a basic or alkaline solution is less than that of an acidic solution. C) As the concentration of H+ increases in a solution, the pH decreases. D) A solution to which HCl has been added will have a greater pH than a solution to which NaOH has been added. E) Each number on the pH scale represents an increase of 108.