Preventing the spread of communicable disease can be done by a. ignoring hygiene. b. avoiding the use of insect repellant. c. avoiding sharing personal items, like toothbrushes. d. coughing or sneezing without covering your mouth and nose.

Most of the world's booming population growth is occurring in countries that arenot highly industrialized. the high birthrates in these countries often result inlower standards of living. which of the following would be the best solution tothis global economic problem? o a. encouraging developing countries to participate in global tradeob. creating an international seed bank to protect biodiversityoc. forming strict regulations on greenhouse gas emissionso d. establishing international agreements to prevent overfishingis it a b c d

Which of the following is a health risk associated with ground-level ozone? a.cataractsb.skin cancerc.respiratory illnessd.all of the above

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