Nitrogen, oxygen and argon are the three most abundant elements in the atmosphere, but there are other key components that are required for supporting life as we know it on earth. One of those is carbon dioxide gas.
Answer:
Learner Engages in Scientifically Oriented Questions.
Learner Gives Priority to Evidence in Responding to Questions.
Learner Formulates Explanations from Evidence.
Learner Connects Explanations to Scientific Knowledge.
Learner Communicates and Justifies Explanations.
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