The kind of friction that shows a falling object is it gravity, free fall

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Do polar molecules have ionic bonds?