Mutation is what happens when (choose three) A. cells make mistakes when copying their own DNA
B. nucleotide is incorrectly paired with its complementary strand
C. parts of a chromosome are deleted D. DNA strand is made into mRNA

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

b) the inside picture would look at a very high temperature in a very low ph