While on safari in serengeti national park, tanzania, your friend ventures away from camp and is bitten by a black widow spider. fortunately, you are prepared and administer artificially acquired passive immunity. with what did you inject your friend?
a) antigen
b) antivenin
c) snake venom
d) penicillin

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.