In the United States, parathion is the most widely used member of a class of ____
a. organophosphate herbicides
b. organophosphate insecticides
c. chlorophosphate fungicides
d. chlorophosphate herbicides
e. chlorophosphate insecticides
b
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What is the advantage of enhanced biological phosphorus removal (EBPR) over chemical precipitation?
A) Chemical precipitation produces sludge containing arsenic. B) EBPR removes significantly more phosphorus than chemical precipitation. C) Significantly less sludge is produced by EBPR compared to chemical precipitation. D) EBPR is a more stable process.
What type of inheritance is observed with extranuclear DNA?
A. Mendelian inheritance B. Sex-linked inheritance C. Paternal inheritance D. Maternal inheritance E. Maternal effect
Gametes are what?
What will be an ideal response?
A requirement of cladistics is that a grouping must include ________
A) species that can interbreed B) only living species C) species with shared traits D) a common ancestor and all its descendants