An adaptation is a feature that is common in a population because it provides some improved function. Adaptations are well fitted to their function and are produced by natural selection.
The metabolic waste found in fetuses is excreted through the umbilical cord back to the mother. Some of it goes to the <span>amniotic fluid which can be seen when the baby is born.</span>
Glucose can be used as an immediate source of energy.
The procedure is called renal angiography. This procedure is done to check the quality of blood flow to the kidneys, check for blockages, narrowing of the blood vessels and lastly aneurysm. A dye is usually injected into the arteries for easier visualization.