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Correct Answer: A) Mixtures.
Correct Answer: B) Pitchblende.
Correct Answer: B) There are no trees.
Correct Answer: B) International System of Units.
Correct Answer: A) Botany.
Correct Answer: D) Vacation.
Correct Answer: B) Liquid.
Correct Answer: A) 2, 2.
Correct Answer: D) Universe.
Correct Answer: C) Diamond is the hardest, graphite is the softest.
Correct Answer: B) Don't use solar energy.
Correct Answer: B) Ghaf Tree.
Correct Answer: D) C.
Correct Answer: A) Ivanowski.
Correct Answer: C) Milligrams.
Correct Answer: B) Weight.
Correct Answer: C) 102 words per minute.
Correct Answer: A) 0$^ \circ$C.
Correct Answer: D) Mercury.
Correct Answer: D) Climate change.
Correct Answer: D) Asteroids.
Correct Answer: C) Both balls.
Correct Answer: B) Hague, Netherlands.
Correct Answer: C) Saturn.
Correct Answer: B) Inner core.