Long-time activities, such as a long running(or the Pacer Test), swimming, and biking.
Hope this helps! :)
Explanation:
Like most stars in our universe, the Sun is on the main sequence stage of its life. This means nuclear fusion reactions in its core fused hydrogen into helium. However, this process cannot last forever since there is a finite amount of hydrogen in the core of the Sun. Currently it has more than 72% hydrogen.
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Answer: asthma
Explanation: hope this helps
I believe the answer you are looking for is the excretory system.
