What obstacles to survival did Jews face in the ghettos of occupied Poland? How

What obstacles to survival did Jews face in the ghettos of occupied Poland? How

What obstacles to survival did Jews face in the ghettos of occupied Poland? How did they attempt to overcome those obstacles? Why did some Jews survive the ghettos and others did not?
Remember to support your claims with evidence from the readings and videos.
video to help w sources: https://www.youtube.com/watch?v=4-y_oz06_cQ