What time of year is it most effective to broadcast tornado safety public safety announcements?
spring
fall
summer
winter

I would say summer. The temperatures and the way the weather is are perfect tornado times. It should be all of them though because you want to keep the public safe no matter what time of year it is.

the one that best dest described an ionic bond is: a force that holds two oppositely charged ions together in an ionic bond, the bond happened with metal and non metal Metal will lose its electron and became possitively charged while the non-metal will gain electron and became negatively charged