If someone sustains brain injury, does it cause them to bite down really hard?

Which strategy is an effective way to overcome internal barrier to seeking ? a) getting permission b) finding financial support c) becoming employed d) calling a hotline

This is one popular brand of exercise machine

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.