Water is a vital that supports all of life on . It makes up 70% of the body and is essential for biological processes, including body temperature, digestion, and transporting nutrients. sources such as rivers, and, are limited, making water conservation . Pollution and overuse global water supplies, impacts agriculture, health, and ecosystems. .

Vitamin D is nutrient that plays a role in the body’s ability to and phosphate, both of which are necessary for maintaining levels. It is known as the “sunshine vitamin” because the skin can vitamin D when exposed to light. This process, however, can be by factors such as geographic location, , and use of sunscreen. A deficiency in vitamin D can lead to conditions such as , which weakens bones, and increased risk of diseases.