Radioactive decay of carbon 14 years since death c14 atoms remaining per 1.0 x 108 c12 atoms 0 10,000 5,700 5,000 11,400 2,500 17,100 1,250 22,800 625 28,500 312 34,200 156 39,900 78 45,600 30 51,300 20 57,000 10 62,700 5 68,400 2 how old is a bone in which the carbon-14 in it has undergone 3 half-lives? a. 11,400 b.17,100 c. 34,200 d. 57,000 hurry i have a test

Hurry i need your (100 points) 1) what are the responsibilities of the region of the brain highlighted below? (picture located below) the highlighted portion is at the rear base of the brain, behind the brain stem. regulating homeostasis, hunger and eating, thirst and drinking, and many other functions of basic survival. coordinating movement and balance by using information from sensory nerves, including hand-eye coordination. controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities. regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing. 2)which of the following systems or structures is correctly paired with its function? neurons - brain cells that control thoughts, calculations, and memory cerebral cortex - portion of the brain that controls involuntary body movement peripheral nervous system - carries impulses to and from the central nervous system central nervous system - carries information from the nerves to the muscles and glands