I need help on this questions:
1.define specific heat capacity?
2.state three differences between boiling and evaporation
3.give two ways in which a pressure cooker conserves heat energy

We only help when you are stuck in the middle of a specific problem, after trying to solve it yourself. We don't do your homework for you. All those answers are easily researched online. If it takes you an hour or more, that's the way it goes.

I just Googled all three topics and found 2 million answers. Since you have a computer, get busy!