What is the estimated fatality rate(percentage) of those who contract the ebola virus?

Why is the first step in responding to life-threading situations to assess the situation?

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.

For yokos physical fitness class she is supposed to do a certain amount of aerobic exercise what is best for her