I'm pretty sure it's called the ozone layer I'm not sure how to spell it but I'm almost sure that's what it's called
1. B (cytoplasm)
2. D (chloroplast)
3. A (protein)
The right answer is B.
Mutations are not always unfavorable, they are often "indifferent" as to the survival of the cells or the individual.
Mutations are the primary source of variation in the genetic material underlying the evolution of living things. They can have a beneficial effect for the species.