Yis it important to notify past partners if you get a positive result from an hiv test?

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

After a group of researchers conducts a new experiment that has never been conducted before, what is the best way for other scientists to make sure that the data is real