2) Leer el texto y escribe en cada número de las siguientes figuras las partes que componen las bacterias y los virus.​

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 of the following is the source of energy for photosynthesis? a.) glucose b.) chlorophyll c.) carbon dioxide d.) sunlight

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