Poison dart frogs _____. (Multiple Choice)

Poison dart frogs _____.
 
  a. should never be kept in captivity
  b. lose their bright colors when kept in captivity
  c. can be detoxified by soaking them in a base solution
  d. derive toxins from feeding on ants that eat toxic plants

Question 2

In 1804, _____ began a journey into America's heartland; a journey which led to fame.
 
  a. President Theodore Roosevelt
  b. President Ulysses S. Grant
  c. Aldo Leopold
  d. Lewis and Clark

Question 3

Today, there are _____ different species of amphibians.
 
  a. approximately 100,000
  b. more than 4,000
  c. no more than 200
  d. roughly 30,000

Question 4

White-tailed deer benefited from clearing forests for cropland.
 
  a. True
  b. False
   Indicate whether the statement is true or false