Answer:
A nail grows from a deep layer of living epidermal tissues, called the nail matrix, at the proximal end of the nail. Stem cells in the nail matrix keep dividing to allow nail growth, forming first the nail root and then the nail plate as the nail continues to grow longer and emerges from the epidermis
Hope this helps
The study of life is called Biology
I am not sure if this answer is right, my guess is;
Medial Temporal Lobe: Memory
The Frontal Lobe: Thinking
I believe the answer would be Topography
