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You should be ready for question and hard work
One type of profit could be gaining knowledge. To do that you can read books or learn from teachers
Answer:
The kidneys' job is to filter your blood. They remove wastes, control the body's fluid balance, and keep the right levels of electrolytes. All of the blood in your body passes through them several times a day. Blood comes into the kidney, waste gets removed, and salt, water, and minerals are adjusted, if needed
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