Poliomyelitis is an RNA virus that can invade the nervous system and cause paralysis within a matter of hours. The nearly complete elimination of polio worldwide is due to
A. antibiotics.
B. improved water quality.
C. vaccination.
D. quarantine.
E. mosquito control.
C. vaccination.
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Which group's members have both lungs and gills during their adult lives?
A) sharks, skates, and rays B) lungfishes C) lancelets D) turtles E) alligators
If you wanted to discover a novel biosynthetic pathway for an antimicrobial compound and were given a handful of soil, describe the key experimental steps you would need to take to accomplish the task and explain why alternative procedures were not perfor
What will be an ideal response?
Gymnosperms, such as spruces, often dominate high-latitude boreal forests because ________
A. they are less susceptible to freezinginduced cavitation B. they have lower H2O requirements C. they have lower H2O transport capacity D. they generate large tensile forces
What would be the effects of the accidental seepage of fungicide into the soils surrounding a plant in a mycorrhizal relationship?
a. The plant would die. b. The plant's water and mineral supply would slow down. c. The plant's leaves would become yellow. d. There would be no change in the plant. e. The plant would lose its nitrogen-fixing partner.