The ears are lateral to the nose.
DNA was found to contain only four different chemical building blocks.
Proteins are diverse because of the various combinations of amino acids there are.
Five short blast from another vessel's horn signify DANGER OR DOUBT. When two vessel are about to pass each other by, they have to communicate each other intentions in order to avoid collision. If one of the party does not understand the message that is been relayed or feel that the other party is not taking enough caution to avoid collision, then he should sound the five short blasts to signify that he does not understand what the other party is trying to do.
The correct answer is <span>D. They break down dead organisms</span>
