What is not suggested for promoting flexibility

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.

Which is the term used for a drug that increases the activity of the nervous system

Cardiac output is affected by heart rate exercise stroke volume all of the above