A-c-t-g-g-a-t
rewrite the sequence to show a substitution of a nucleotide in the dna strand.

 I  took the test got it right here it a copy of the  test showing I got it right hope this helps

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.