What does Hume think about causation? What does his view mean for scientific certainty? Do you agree with him or not? . can you help me answer this

What does Hume think about causation? What does his view mean for scientific certainty? Do you agree with him or not? . can you help me answer this question ? I can copy the answer already have on this web. my teacher she may know . she was warning one time . please! help me