Which action will likely decrease a population's size?
A) improving the quality of its habitat
B) increasing the size of its habitat
C) practicing sustainable resource management in its habitat
D) decreasing the food supply available to the population
Answer: D
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The closest living relatives of birds are ____
a. mammals b. lizards c. turtles
d. crocodiles e. amphibians
The Cretaceous is the most recent period of the ____ era
a. Paleozoic b. Cenozoic c. Mesozoic d. Proterozoic e. Archaean
The domain Archaea includes prokaryotes that are
A) endospore formers. B) intracellular parasites. C) members of the deeply branching bacteria. D) human pathogens. E) hyperthermophiles.
"Heat shock" is an effective means of
A. inserting a DNA fragment into a vector. B. introducing DNA into animal cells. C. introducing DNA into plant cells. D. introducing DNA into bacteria. E. starting a PCR cycle.