If i rub a balloon on a piece of paper then hold it against my head my hair will stand up why is that?

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

What’s a special glass that most beakers are made of

Which of these best describes an ionic bond?