Answer:
Healthy vitamin D levels might help prevent skin from prematurely aging but too much sun leads to accelerated skin aging. Some studies have found that vitamin D can help treat skin conditions like dry skin, psoriasis, or eczema
Explanation:
Answer:
It is called oxygen-rich blood.
Explanation: The heart pumps blood to all parts of the body. Blood provides oxygen and nutrients to the body and removes carbon dioxide and wastes. After the blood gets oxygen in the lungs.
The answer would be c skeletal muscle