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Correct Answer: D) Chemical.
Correct Answer: B) Indirect.
Correct Answer: D) Carbon.
Correct Answer: B) 18, 7.
Correct Answer: D) Halogens.
Correct Answer: C) Nuclear fusion.
Correct Answer: A) Sulphonates.
Correct Answer: C) Reactants.
Correct Answer: C) Temperature.
Correct Answer: A) Acidic Diuretic Hormone.
Correct Answer: C) 639.
Correct Answer: A) Ampere.
Correct Answer: C) The paper has reacted with oxygen from the air.
Correct Answer: C) Gills.
Correct Answer: C) Meteorologist.
Correct Answer: B) Energy can not be created or destroyed.
Correct Answer: D) Respiratory system.
Correct Answer: A) Kangaroo rat.
Correct Answer: D) HCL.
Correct Answer: C) Hydrogen and oxygen.
Correct Answer: C) Cementation.
Correct Answer: B) They have been continually moving.
Correct Answer: B) Protect.
Correct Answer: B) Dissolving sugar, melting ice, etc. Any change in appearacne but not a different substance.
Correct Answer: A) H+ ions.