1. In a dry-cleaning store, An spills some cleaning fluid on his arm. It immediately turns red but does not blister. What type of burn is Joe’s injury and how should he treat it? 2. When you have a...

1. In a dry-cleaning store, An spills some cleaning fluid on his arm. It immediately turns red but does not blister. What type of burn is Joe’s injury and how should he treat it?

2. When you have a severe injury, what does happen to your skin? How to help the wound healing?