Pcan sombody tell me three questions on air and water pollution

Which is an effective way to prevent bullying and harassment

If you know answer will mark brainliest

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.