When charged particles from the sun strike atoms in earth's atmosphere, it causes electrons to move to a higher energy state. When the electrons drop back to a low energy state they release light photons. That is what causes an aurora!
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(-:
Respiratory- You breath faster to help supply the muscles with more oxygen.
Integumentary (skin) - Sweat helps cool down the body.
Answer:
What is an allele.one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
Explanation:
<span>The lungs both take in oxygen molecules for cells of the body to use and eliminate carbon dioxide molecules from the body.</span>
