Species is the most narrow category
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It radiates light and heat, or solar energy, which makes it possible for life to exist on Earth. Plants need sunlight to grow. Animals, including humans, need plants for food and the oxygen they produce. Without heat from the sun, Earth would freeze.
Answer: The Hyoid Bone
Explanation: The hyoid bone helps to support the tongue and elevate the larynx when you talk or swallow. It's the only bone of the body that does not articulate with any other bone.