What are the five leading causes of death for all americans in order

In which cell structure does thevprocess of photosynthesis take place

What would happen if you ate the number of calories of someone who is much taller and more active than you are?

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.