Innovative features of Apple's iPhone and iPad operating systems have been adopted by competitors. This is an example of which kind of diffusion?
A) stimulus
B) expansion
C) contagious
D) relocation
E) none of the answer choices are correct.
Answer: A
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The land area around a stream that delivers runoff, sediment, and dissolved substances into the water is called the
a. Watershed b. drainage basin c. floodplain zone d. transition zone e. watershed and drainage basin
One of the essential factors in a sustainable future based on improving human well-being and protecting our common environment is
A. Increased aid for developing countries B. A demographic transition to stabilized population growth for developing countries C. Environmental and resource protection D. Technology transfer from developed to developing countries E. All of these
Astronomical causes of climate change occur with cycles of:
A) 1 - 5 million yrs. B) 450,000 yrs. C) 26,000 - 100,000 yrs. D) 100 million yrs. E) 20,000 yrs.
In which of the following radiation detectors is a phosphor used?
A) a Geiger-Müller counter B) a proportional counter C) a scintillation counter D) all of these