Restless and agitated, concerned with self.
The answer is B. Melanoma
Melanocytes cells create a brown pigment called melanin and actually melanin protect deeper layer of the sins from the harmful effect of the sun
But for some people, prolonged exposure to the sun make melanocytes create an uncontrollable amount of pigment and create cancer
The three memory systems are long-term memory, short-term memory and perceptual memory. The first one revolves around things we see and stay in our memory for a few seconds. The second type of memory is short-term or working memory which is about things we can memorize for a couple of minutes or even hours. Long-term memory generally lasts for ages.
Without either of these, we are unable to learn.
