Answer:
they contain hymoglobin
Explanation:
the red pigment in blood cells
Answer:
The nephron, the functional unit of the kidney, is responsible for removing waste from the body. Each kidney is composed of over one million nephrons that dot the renal cortex, giving it a granular appearance when sectioned sagittally (from front to rear).
Explanation:
2.5g/ml will sink because it has higher density compared to water
0.5g/ml will float because it has lower density compared to water

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