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1). Mammals carry hemoglobin and oxygen in their red blood cells to help the blood circulate in the different parts of their body. State some reasons for these adaptations.
2). Human skeletal muscles consist of two types - the slow-twitch and fast-twitch skeletal muscles. The slow-twitch contains many mitochondria and hemoglobin content, whereas the fast-twitch skeletal muscles contains few mitochondria and hemoglobin content. State some reasons why humans and other mammals can adapt to different situations through the use of their skeletal muscles.
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