I'm trying to think of some hypothetical situations, it gets difficult since usually karma is very complex.

In high school you're a bully. Ten years later you go to a job interview, one of the individuals you picked on happens to be the boss.
That is a more direct example with entities A and B, A affected B negatively...in the future it is up to B whether A is benefited.

http://www.trans4mind.com/personal_d...tual/karma.htm
I don't agree completely with this page but it does give some examples.

Also, I don't believe the laws of physics change from planet to plant, galaxy to galaxy or even universe to universe. The only change may be in the variables.