Answer: A) Heart and lungs
Explanation:
The heart becomes more efficient with every beat as it pumps oxygen-carrying blood, the lungs more effective in taking in oxygen, and the muscles more equipped to use more oxygen.
Answer:
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Explanation:
Answer:
The different use of the tongue in amphibians and mammalian.
Explanation:
The amphibians use their tongue to catch their prey by providing outward and extending inwards for election and digestion process. The mammals ( humans) use their tongue to taste and roll food into bolus with then goes through the oesophagus down to the stomach.