Natural selection ________
A) works on populations, but its long-term effect is rendered on individuals
B) works on individuals, but its long-term effect is rendered on populations
C) can work only on populations of genetically identical individuals
D) works regardless of the amount of genetic variability in populations
B
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The crash of the Atlantic codfish is the result
of
a. habitat loss. b. invasive species. c. competition. d. overharvesting. e. pollution
The human body may stop responding to a stimulus even though the original stimulus is still present; this is a process referred to as receptor adaptation.
Answer the following statement(s) true (T) or false (F)
cAMP levels decrease when __________. This results in __________ of CAP
a. lactose levels increase; activation b. lactose levels decrease; inhibition c. glucose levels increase; inhibition d. glucose levels decrease; activation e. glucose levels decrease; inhibition
What two tissues transport materials throughout the entire plant body?
a. sclerenchyma and xylem b. phloem and xylem c. parenchyma and xylem d. sclerenchyma and collenchyma e. epidermis and xylem