Which characteristic will NOT strengthen the validity of a theory?
A. Repetitions of experiments
B. Increased observations
C. Time after the experiment
D. Faith in the experiment
E. Confirmation by many scientists
Answer: D
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The body pattern of plants
A. is determined by the orientation of the first zygotic cell division. B. is determined by sunlight. C. is determined by three axes. D. develops in segments.
In addition to the energy available in the ATP molecule, _________ provides an immediate source of high-energy bonds available to power muscle contraction
a. fat b. glycogen c. glucose d. lactic acid e. creatine phosphate
The likelihood that a pathogen will make its host seriously ill is
a. pathogenicity. b. opulence. c. virulence. d. invasiveness. e. competence.
As a developing country passes through the demographic transition, which of the following will occur?
A) First, its birth rate will decrease, followed by its death rate. B) Its age structure will change, but its growth rate will remain unchanged. C) Its growth rate will first fall, but later recover. D) Its birth and death rates will decrease simultaneously. E) First, its death rate will decrease, followed by its birth rate.