contestada

When compared to Earth’s atmosphere 4.5 bya, Earth’s atmosphere today has________.


A. More carbon dioxide


B. More methane


C. More oxygen


D. More copper

Respuesta :

myamarie2606

Answer:

C. More oxygen

Explanation:

The world 4.5 billion years ago had hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today’s atmosphere. After about half a billion years, Earth’s surface cooled and solidified enough for water to and oxygen collect on it.

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