Hey here is the answer,
It is a globular protein, it contains one iron atom, that can bind one oxygen molecule. Therefore it has high affinity for oxygen.
Hope this helps you...
Placenta
It also does not allow the maternal and fetal bloodstreams to mix
'The endocrine system<span> is made up of glands that produce and secrete hormones, chemical substances produced in the body that regulate the activity of cells or organs. These hormones regulate the body's growth, metabolism (the physical and chemical processes of the body), and sexual development and </span>function' According to Google.
Probably water. Abiotic means not living, such as sunlight or water.
