Species richness on an island is determined by ____
a. distance from the mainland only
b. island size only
c. the type of species on the island only
d. distance from the mainland and island size
e. distance from the mainland and type of species on the island
ANSWER: d
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The ocean has mitigated the impact of anthropogenic carbon dioxide production by
A) absorbing 500 billion tons of atmospheric carbon dioxide. B) absorbing over 80% of the trapped heat energy. C) storing 600 billion tons of organic carbon. D) absorbing 500 billion tons of atmospheric carbon dioxide and over 80% of the trapped heat energy.
Are plant and animal cells generally the same size?
a. Yes b. No, plant cells are generally larger. c. No, animal cells are generally larger.
The reason that the various Hawaiian
honeycreepers are vulnerable to extinction is a. the reduction of their habitats. b. the warming of their habitats, supporting mosquitoes that carry the pathogens for avian malaria. c. the encroachment of humans into their habitats. d. the importation of new predators and competitors into their habitats. e. all of these answers
Syphilitic tumors called ________ develop in the liver, skin, bone, and cartilage during the tertiary stage of syphilis.
Fill in the blank(s) with the appropriate word(s).