Safer Alternatives Short Answer

For many years, everyday products like spray cans, refrigerators, and air conditioners contained chemicals called CFCs. At first, they seemed harmless-but scientists later discovered they were damaging Earth’s protective ozone layer. This reading passage explains why CFCs were banned, what chemicals replaced them, and how scientists continue searching for even safer alternatives that protect both people and the environment.

This worksheet strengthens reading comprehension through real-world science and environmental history. Students build vocabulary with words such as CFCs, HCFCs, HFCs, ozone layer, ultraviolet radiation, and Montreal Protocol. Written in a clear, conversational style, the passage helps readers understand how scientific discoveries often lead to better technology and smarter choices.