HELP LIKE HELP HURRY I HAVE 2 hours. To finish

1. list three scientific reasons cockroaches may fly.

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)