Which of these is a mixture? carbon dioxide potassium calcium salt water

Is tea good for you? if so what type of tea is good for you? and how much should i drink before it is a threat to my health?

Okay, so i need some i just broke up with my boyfriend and i don't know what to do. i am crying everyday, i have nightmares, and i even wake up with the fear of talking to anyone else. it's not even making my addiction any better, it's making it worse.

Speaking in “i” messages is an effective way state your needs as feelings without blaming someone else. true or false