Epiglottis is the <span>protective tissue that covers the trachea when you swallow</span>
Answer:A blood: 25% B blood: 25% AB blood: 50% O blood: 0%
Explanation:
Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Convection causes heating in troposphere because it drops in temperature with altitude, but has a relatively high density of air. The stratosphere has no weather because convection cannot happen because the air gets hotter in this layer as you go up in altitude.
