instruction:
You are given a sentence and your task is to generate another sentence that supports the given input.
question:
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.
answer:
Oxygen is transferred into the bloodstream by simple diffusion.


question:
All the matter in the universe is composed of basic substances called elements .
answer:
Elements are pure substances that make up all matter.


question:
3) The solubility of gases typically decreases with increasing temperature.
answer:

When the solubility of gases in liquids changes with increasing temperature, it decreases.