Endothermic change is when energy enters a system. True or false?

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

How do i turn 2 s into one in the products

Who determined the nature of chemical bonds?