The last one because plants move oxygen out to the atmosphere while taking in C02
<span>Different pressure levels
Hope this helps and please award brainly :)
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Answer:
B) meteorite sample
Explanation:
The age of the solar system, derived from the study of meteorites (thought to be the oldest accessible material around) is near 5 billion years; that of the Earth is taken as 4.6 billion years. The oldest rocks on Earth are dated as 3.8 billion years.
Answer:Margulis
She is the one who discovered it