How does DDT in the environment affect many birds?
A. stunted growth of chicks
B. chronic liver failure in adults
C. advancing neurological degeneration
D. failed reproduction
E. None of these choices are correct
D. failed reproduction
Biology & Microbiology
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Which mollusc clade includes members that undergo embryonic torsion?
A) chitons B) bivalves C) gastropods D) cephalopods
Biology & Microbiology
How many genes does a human X chromosome carry?
a. 100 b. 1,400 c. 2,800 d. 14,000 e. 28,000
Biology & Microbiology
Which of the following areas of the body have mucous membranes?
A) mouth B) nasal cavity C) urinary system D) mouth and nasal cavity E) mouth, nasal cavity, and urinary system
Biology & Microbiology
The prokaryotes known as methanogens require ________ environments.
A. aerobic B. acidic C. high salt D. high temperature E. anaerobic
Biology & Microbiology