TASK DEFINITION: You are given a sentence and your task is to generate another sentence that supports the given input.
PROBLEM: Microevolution involves small changes in gene frequencies within a population over a few or many generations, up to the formation of new species.

SOLUTION: Microevolution is when a species changes in small ways over time.

PROBLEM: Low pressure or falling pressure generally means cloudy, unsettled or wet weather while high pressure or rising pressure means calm and clear weather.

SOLUTION: Cloudy conditions will most likely result from a low-pressure weather system.

PROBLEM: All organic molecules have a carbon skeleton that is composed of rings or chains of carbons.

SOLUTION:
The element carbon is present in all organic molecules.