The origins of cooking are obscure. Primitive humans may have tasted roast meat for the first time by chance, when the flesh of a beast killed in a forest fire was found to be more palatable and easier to chew and digest than the customary raw meat. They probably did not intentionally cook food, though, until long after they had learned to use fire for light and warm. The earliest prepared dish was a crude paste made by mixing water with the cracked kernels of wild grasses. This paste, toasted to crustiness when dropped on a hot stone, made the first bread.
Through his art, Piet Mondrian wanted to simplify life into lines and primary colors. Mondrian's work has bright spaces of color and quiet places of white which develop of a rhythm, similar to life in which have busy times and quiet times.
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.