Help! Its the last thing i needa do!

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

Smog is the term used to describe the combination of fog and smoke

How are elements arranged in a periodic table