the first answer as blood needs to be oxygenated to be passes round the body then when its deoxgenated it will return to the heart to be pumped around the body again
Answer:
If that is a question, the answer would be deoxyribonucleic acid (DNA).
Explanation:
The depth in a multilayer rock formation with the oldest rock most likely to be found in the igneous rock because almost anywhere is where the volcanoes have formed the earth.
Incoming solar radiation relates to climate because the more solar radiation the hotter it will get. When energy trapped in the atmosphere warms the land, ocean and air.