* Muscles usually act in pairs because they O can pull in only one direction O must combine to have enough strength O must be anchored by other muscles O divide and split during formation​

Iwould google this

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)