What factors characterize a healthy relationship that contributes to positive social well-being?

Fill in the blanks to complete the labels on this model of replicating dna! super

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

How could natural selection best be used to explain the evolution of the white fur of arctic fox