Answer:
organ
Explanation:
The level of organization that the heart would be classified as is organ. The heart is an organ that is made of cardiac tissue, and cardiac tissue
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Explanation:
Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. A high BMI can indicate high body fatness. BMI screens for weight categories that may lead to health problems, but it does not diagnose the body fatness or health of an individual.
Strong belief an unshakable belief and something without need for proof or evidence