The kind of plastic with the highest recycling rate is
A. Polystyrene (PS)
B. High-density polyethylene (HDPE)
C. Polyethylene terephthalate (PET)
D. Polypropylene (PP)
Answer: B
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What is the distinctive form of a language that is associated with different regions?
A) lingua franca B) language group C) dialect D) official language E) language family
What does "centripetal" mean?
A) false force B) center-seeking C) inward pull D) downward push
The depth below which there is no wave motion is called the
A) wavelength. B) wave base. C) wave period. D) wave height.
One of the most general conclusions to be drawn from plate tectonic theory is that ____.
a. the Earth is gradually losing heat b. the Earth's geography has continually changed c. the Earth is slowly expanding d. the Earth is slowly shrinking e. all the ocean basins are gradually enlarging