Chemistry, 28.11.2019 17:31 Flaka2809

Which layer of the atmosphere is the most important to humans?

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Chemistry, 22.06.2019 16:50, TrueKing184

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Chemistry, 22.06.2019 17:30, llamasking

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)