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Q1: Conditions for the preservation of fossils are
Q5: Glass is<br>A)amorphous.<br>B)crystalline.<br>C)covalent.<br>D)polar.
Q16: The interior of the sun consists of<br>A)liquid
Q17: Pulsars are unlikely to be<br>A)small in size.<br>B)in
Q27: A supernova explosion may leave behind which
Q29: An object has a positive electric charge
Q33: The image formed by a diverging lens
Q41: The bonds between the atoms in a
Q47: Which of the following quantities is always
Q58: When 90 kJ is removed from