<span>BROCA'S AREA
Broca's area or the Broca area is a region in the left frontal lobe of the dominant hemisphere of the hominid brain with functions linked to speech production.
Broca area, also called convolution of Broca, region of the brain that contains neurons involved in speech function. This was discovered in 1861 by French surgeon Paul Broca, who found that it serves a vital role in the generation of articulate speech.</span>
Answer:
The main function of the circulatory (or cardiovascular) system is to deliver oxygen to the body tissues, whilst simultaneously removing carbon dioxide produced by metabolism.
There would be 40 units of energy left, because 10% is lost each time.
