Sphere interaction is as simple as water evaporating into the air. This would be an interaction between the hydrosphere and atmosphere. Choose other examples of sphere interaction. a cat eating a bird water from a lake absorbing into the ground humans building a house waves creating sandy beaches
I would say the first and the forth because the have to do with the earths proceses i would not say cat eating bird or human building house unless you count house building as messing up the biosphere so not the cat eating the bird.
