Whelp, it is definitely not D.
I would say B.
there was no Paleogene period.
Answer:
Red blood cells transport oxygen around the body. They are specialised to carry oxygen because they: contain large quantities of a protein called haemoglobin , which can bind oxygen. don't have a nucleus, so there is more room for haemoglobin.
Explanation:
Answer:Radiant energy is a form of kinetic energy so it is Kinetic energy .
D, active transport because that protein uses atp to cross channels and active transportation is the only form of movement that’s used atp to move
A molecule is a group of two or more atoms held together by chemical bonds. A compound is a substance which is formed by two or more different types of elements which are united chemically in a fixed proportion. All molecules are not compounds. All compounds are molecules.