Please awnser all 3 questions some substitution mutations result in a malfunctioning protein, but others do not. why is this?

Why do mutations that create a stop codon have a bigger effect on the protein than other mutations?

how can a mutation be neutral?

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

what are the options