The human genome consists of approximately pairs of nucleotides. 3 billion 3 million 300,000 3000

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

Which best describes carbon dioxide’s path out of the body

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer