What might happen if your stomach stopped producing pepsin

Which of the following is the main purpose of a human community?

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Evolution acts upon the population of organisms and not on each individual organism