8.Which of the following is NOT an electrolyte? calcium

iron

potassium

sodium

Frankie is having difficulty developing a friendship with histeammate curtis. whenever frankie invites curtis to hangout with him at the park, curtis always says that he's busy.what is most likely preventing a healthy relationship fromforming? a)the boys are not being generous with their time andeffort.b)the boys are not communicating.c)both boys are too busy.d)the boys are on different teams.

How could natural selection best be used to explain the evolution of the white fur of arctic fox

How harmful is it to smoke a pack of cigarettes a week?