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8. A substance that cannot be broken down into simpler form by ordinary chemical means is called ________.
a. Element
b. Compound
c. Mixture
16. Dolly was the first ever living creature to be cloned. What type of animal was she?
a. Sheep
b. Deer
c. Cow
19. What process produces most of the energy that is radiated by the sun?
a. Gravitational contraction
b. Chemical combustion
c. Nuclear Fusion
Average Round
1.