Drag is another one i actually did this project in 5th grade so i know some of this hope this helps.
<span>Bivalvia - Clams, Oysters, Scallops and Mussels.
Cephalopod - Octopi, Squids, Cuttlefish, and the Chambered Nautilus.
Gastropoda - Snails and Slugs.
<span> Polyplacophora - Chitons.</span></span>
It is A: Uracil
DNA and RNA is my favorite subject in Biology and Anatomy
<span>The introduction of an unpleasant or painful stimulus, or the removal of a desirable stimulus, can be use to decrease the probability that a preceding behavior will occur in the future can be classified as punishment. This is a behavior modification which is a technique that is use to promote desirable behavior and lessen undesirable behavior.</span>