The answer would be "D. TRACHEA". It is because the first part of the pharynx which is the nasopharynx transports air from the nose down to your throat and eventually to the lungs where gas exchange between carbon dioxide and oxygen occurs.
Sneezing, rash, throwing up, coughing, itching, fever
C. resting metabolic rate
Inherited variation is variation in a characteristic<span> that is a </span>result<span> of </span>genetic<span> inheritance from the parents.
</span><span> The following human characteristics are the result of our genetic material:</span>eye colour, hair colour, skin colour, lobed or lobeless ears.<span>Gender is inherited variation too, because whether you are male or female is a result of the genes you inherited from your parents.</span>
