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What can friends provide to affect mental health positively? a)peer pressureb)challengesc)conflictd)com panionship

What is the only part of your body called that should touch the ball when setting in volleyball?

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.