Chemistry: Does someone know what a 1 base unit is in chemistry can someone give full explanation ♡​

Which statement is a reason to support population regulation? a) it is unethical for us to control birth control rates b) humans have the freedom to produce as many children as desired c) the gap between the rich and poor has been narrowing since 1960 d) billions more people on the earth will intensify many environmental and social problems

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?