When blood is in the lungs,
where oxygen is plentiful, oxygen easily binds to the first subunit and then quickly fills up the remaining ones. Then, as blood circulates through the body, the oxygen level drops while that of carbon dioxide increases. In this environment, hemoglobin releases its bound oxygen.
A (m) is likely to be smallest
The haploid male (sperm) and female (egg<span>) sex </span>cells<span>; in </span>plants<span>, formed by mitosis of haploid </span>cells<span> in the gametophyte. ... The multicellular diploid portion of the </span>plant life cycle<span> resulting from the growth, mitosis, and </span>cell<span> division of a zygote. </span>Produces<span>sporangium that store haploid spores. Google*</span>
Sediment; There is a source of heat that was not included in the question to create all the other choices.
The answer is B. they embody the idea of descent with modification.