Which of the following describes how you can score a point in football? A. Carrying the ball over the goal line
B. Tackling an opposing ball carrier in your own end zone
C. Kicking the ball through the goal posts on the opposing side
D. All of the above

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides.b) replication of their genomes does not involve proofreading.c) rna viruses can incorporate a variety of nonstandard bases.d) rna viruses are more sensitive to mutagens.