Several food chains woven together comprise a(n) ________.
Fill in the blank(s) with the appropriate word(s).
food web
Several food chains woven together comprise a food web.
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PCR uses a special DNA polymerase that
a. resists low temperatures. b. resists acids. c. resists bases. d. resists high temperatures. e. resists centrifugation.
Differentiate between the following terms: threatened species, endangered species, and extinct species. What will be an ideal response?
A(n) ________ is one that is present in the common ancestor and all members of a group.
A. cladistic characteristic B. shared derived character C. shared ancestral character D. analogous structure E. divergent characteristic
Group B Streptococcus is most likely to cause bacterial meningitis in which of the following age groups?
A) older adults B) newborns C) infants and children D) adolescents and young adults E) It infects all age groups equally.