You are given a sentence and your task is to generate another sentence that supports the given input.

[Q]: All objects moving toward the earth do so because of two distinctly different forces, one pushing the object and one pulling the object.
[A]: Objects on earth have two forces acting on them at all times.


[Q]: Sediment is transported along the coast in the direction of the prevailing current (longshore drift).
[A]: Sediment is transported by currents.


[Q]: Oxygen molecules pass from the air space of an alveoli into its capillary bed via simple diffusion -- oxygen concentration in the air is greater than it is in the bloodstream.
[A]:
Oxygen is transferred into the bloodstream by simple diffusion.