I believe the answer is answer D- Nuclear decay rates are constant.
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Answer:Methanol is a poisonous chemical derived through synthetic processes, while commercial ethanol is produced by factory fermentation of food crops.
Explanation:
Answer:
Because it contains carbonic acid
Explanation:
Carbonic acid is made from dissolving carbon dioxide in water. Since carbon dioxide is exhaled in the lungs, and the exhaled air is moist due to the presence of water molecules from the alveoli, then the carbon dioxide gas will be dissolved in the exhaled air’s moisture rendering it slightly acidic.
Answer:
não concordo
Explanation:
pois com o passar do tempo por causa de algumas influencias naturais os continentes vão mudando de forma e posições
Answer:
b
Explanation:
It is a fossil of sea shells