Three ways to protect oneself from the sun is;
1. Wearing sunscreen protection
2. Wearing sunglasses, long sleeves, and a hat
3. Getting outdoors before 10 am and after 4 pm when the sun rays are least strong
When sun rays hit the skin, a cascade of biochemical pathways is significant in the uptake of vitamin D from the gut. Vitamin D is important in the absorption of calcium and minerals into bone and making them strong. This prevents diseases such as rickets.
Answer:
Classical conditioning may be defined as a type of learning process in which the neutral stimulus is paired with conditioned stimulus and generate the strong response. The beneficial response will result in the action against that particular stimulus.
Kim had experienced the spontaneous recovery. Here, Kim is able to response and return to the previously conditioned response that has been extinguished. Even after the rest period, his response against the stimulus is active and has become strong that enable him to wake up him early at 7 a.m.
The kind of infection would be a fungus infection, since you mention thickening and discoloration of the nail.
