The epidermis is the 5 top layers, and the dermis is the 2 inner layers
Answer:
B. Oxygen molecules recombine to allow cells to get larger
A is the active site and C is the enzyme
The correct answer is: A. A change in a cell's genetic material.
Mutations occur in DNA as a result of mistakes during the DNA replication (when repair mechanisms don’t fix it) or as the result of environmental factors (e.g. UV light). Mutations can have positive impact, by increasing the genetic variation or can have negative effect, causing the diseases or cancer.