According to the ____, new species are prevented from entering a community by the existing species
a. equilibrium theory of island biogeography
b. facilitation hypothesis
c. inhibition hypothesis
d. intermediate hypothesis
e. tolerance hypothesis
ANSWER: c
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How do defibrillators work?
a. they pump adrenalin into heart tissue. b. they deliver an electric shock to the heart’s pacemaker. c. they automate CPR. d. they massage the heart using remote sensors. e. they do a combination of more than one of these
All crocodilians
a. live in or near water. b. are predators with sharp teeth. c. have a four-chambered heart. d. show parental behavior. e. fit all of these descriptions.
Severe combined immune deficiency (SCID) is
a. caused by a virus. b. caused by a bacterium. c. inherited. d. caused by a fungus. e. caused by a parasite.
If you put 20g of food in 180ml of sterile water and blend, what dilution factor does this represent?
A) 1:10 B) 1:100 C) 1:1000 D) This is not a dilution.