It is based in the Animals Kingdom hope that helps.
I'd say that it is C. by burning food molecules and releasing their energy as heat
Oxygen-poor blood goes into the lungs and through the lung capillaries after leaving the heart. It does so to be oxygenated by the lungs. The oxygen in the lungs comes from the air we breath. Once the blood is oxygenated, it goes back into the heart, to be pumped back into our bodies for distribution.
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A plant based diet is clearly more nutritious. In fact, all protein orginates in plants. This is because it does not contain cholestrol, has very little amounts of fat, and is the only source of fiber. The science also bears this out. A plant based diet requires less recourses because it does not require the feeing of animals. The grain, fruit, vegtables, etc. goes directly to huaman, rather than being given to a imprisoned animals first. People should not only eat less meat, the should eat no meat. This is due to the three pillars of veganism. Ethics, envirnonment, and health. It is unethical to keep a animal in a cage it's short life and murder it. It is not envronmentally safe to raise trillions of animals a year all of whom produce methane, which is 16x more potent than CO2. And for health. It is increadable unhealthy to eat animal products. T. Colin Campbell has found a connection between cancer and dairy. Dr. Caldwell Esselstyn has found a undeinable link to heart disease. There are may more connections like this, which are very clear in their message: Humans can not handle the saturated fat, HEME iron, cholestrol, sugars, inflammatory substances, and everything else that comes with eating animals. Humans basic biology says we should not eat meat. We cannot murder animals with the tools that nature gave us.
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