Answer:
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Answer: B
Explanation: Hope this helps :)
Answer:
A. It Shows that organisms have changed over time.
Explanation:
The heart of a lazy person pumps blood less efficiently than an athlete who has trained and prepared to achieve a high performance, this can be understood with the example of football players who will play in other countries that have a higher altitude than the country of origin and has to go before to get used to the rarer air
