Compare the work of art by Michalangelo and Leonardo Da Vinci citing specific techniques that each artist used

If you are going to ask people to do your homework at least try to sound a bit more friendly, other then demanding. If you have questions or need help most people here will be more than gladly to help you, but do your own homework. I would simply recommend to look them up on wikipedia and look at the differences in their art. I will only help as far as to tell you that Leonardo was more ytical, he placed more emphasis on the observation and understanding of his subject, he largely studied anatomy and optics among other things and applied them in his art. Whereas Mike was simply more emotional, and expressive in his art. You need to learn this stuff, go do your own research.