You need both to be healthy but you're suggested to try and intake more unsaturated fats, as they are thought increase good cholesterol.
They found the fossil evidence in a place where there was once a body of water such as the ocean.
The photosynthesis reaction(s) (by green plants in sunlight)
6 C02 + 6 H20 =>C6H1206 + 6 02
The correct answer is a structure that would differentiate the hollow heart into chambers to separate oxygenated blood.
The heart has four chambers: two ventricles and two atria. The right atrium gets oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-deficient blood to the lungs.
The left atrium gets oxygen-enriched blood from the lungs and pumps it to the left ventricle, and the left ventricle pumps the oxygen-enriched blood to the body. The right and left atrium are distinguished by a wall of tissue known as the atrial septum, and the left and right ventricles are separated by the ventricular septum.
