What does a completely columnar population pyramid represent?

A) proportionally more young than middle-aged or elderly people
B) equal proportions of young, middle-aged, and elderly people
C) proportionally more middle-aged and elderly than young people
D) proportionally more middle-aged than elderly and/or young people


B

Biology & Microbiology

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Data review process for AST profiles:

a. requires susceptibility testing results only. b. is the responsibility of a single individual in the laboratory. c. can be done on "as needed" basis, no less frequently than weekly. d. allows for troubleshooting of unusual pro-files and results to be held until resolved.

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How does the spiral valve within the shark intestine increase the efficiency of food digestion?

What will be an ideal response?

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Most plants appear green because:

a. Chlorophyll is a pigment that reflects green wavelengths of light b. Carotenoids are pigments that reflect green wavelengths of light c. Carotenoids are pigments that absorb green wavelengths of light d. Chlorophyll is a pigment that absorbs green wavelengths of light

Biology & Microbiology

The adaptations of species involve

a. form. b. function. c. behavior. d. life history patterns. e. all of these.

Biology & Microbiology