<span>Deoxyribonucleic Acid is what DNA stands for.
Hope this helps!</span>
Because humans and all other organisms use some combination of these elements. if we lost a whole species everything would be out of balance and we would slowly lose everything and in the in, causing a global scale extinction event. <span />
By using sunlight, it evaporates the water. As it evaporates, the water vapor rises into the air and it creates clouds.
It is the specific role that an organism preforms in an ecosystem
This means that a single carbon atom can form up to tetravalent bonds with other atoms
