Which of the following statements about biodegradable polymers is true?
A) They will degrade quickly in a landfill.
B) Thermosetting polymers are biodegradable, but thermoplastics are not.
C) They often require specific temperatures or the presence of microorganisms in order to undergo degradation.
D) Polyvinyl chloride is a biodegradable polymer.
Question 2
The fact that a heat pump requires energy to move heat from a colder object (the outside of a house) to a hotter object (the inside of the house) is a real life observation of which thermodynamic law?
A) the first law
B) the second law
C) the third law
D) the fourth law
Apparent and True Orbits of Alpha Centauri.
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Which of the following statements is true of linkage?
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