Answer:

contains the DNA of the hair
the presence of food in the stomach typically causes release of gastrin, but low pH inhibits release of gastrin.
Codominance or incomplete dominance is the answer in this question. This pattern of color expression is most likely to be an example of incomplete dominance or codominance. Codominance is defined as a form of dominance wherein the alleles of a gene pair in a heterozygote are fully expressed. Incomplete dominance on the other hand is a form of intermediate inheritance in which one of the allele for a specific trait is incompletely expressed over its paired allele.
The scientific method happens in our daily lives whether we know it or not. You’ve probably heard of this example before, but a light bulb that burns out may simply need to be replaced. A light bulb that works intermittently is a much more suitable candidate for use of the scientific method, because of all of the potential causes of it not working.
Superficial is a used to describe structures that are closer to the exterior surface of the body. Deep refers to structures closer to the center of the body region. For example, skin is superficial to bones, and bones are deep to skin.