How does the skin protect the body from external threats?

Hey there! The skin is pretty amazing at protecting our bodies from external threats. It acts as a barrier, preventing harmful substances, pathogens, and UV radiation from entering our bodies. The outermost layer of the skin, called the epidermis, is made up of tightly packed cells that create a tough, waterproof shield. It helps to keep our body hydrated and prevents water loss. The skin also produces oils and sweat, which have antimicrobial properties and help to keep our skin healthy. So, our skin does a great job of keeping us safe and sound!