Which one of the following choices is the closest in size to one serving of meat?
a. a coffee mug
b. a baseball
c. an open palm
d. a deck of cards

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?

Wich technque is not recommended for use as a supporting detail

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.