Which describes how mrna is used by a cell? a. it is used to replicate dna for meiosis. b. it is used to stop toxins from entering the nucleus. c. it is used to prevent mutations in dna. d. it is used to transfer information to the ribosome.

answer; i believe the correct answer is (replication is not conservative);

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this