The integumentary system forms the outer covering of the body including skin, hair, and nails. which of the following is not a function of the integumentary system?
a. food digestion
b. protection
c. thermoregulation
d. vitamin d production

What is the function of reverse transcriptase in retroviruses? a) it uses viral rna as a template for dna synthesis.b) it converts host cell rna into viral dna.c) it translates viral rna into proteins.d) it uses viral rna as a template for making complementary rna strands.