The epidermis is the outermost layer of our skin.
Some cells have more mitochondria than others. Your fat cells have many mitochondria because they store a lot of energy. Muscle cells have many mitochondria, which allows them to respond quickly to the need for doing work. So you can assume it is either a fat or muscle cell!
The answer is D. The heat is so intense in tropical regions it can stir up thunderstorms.
Who is Darwin? Please be more specific.
