TASK DEFINITION: You are given a sentence and your task is to generate another sentence that supports the given input.
PROBLEM: BACKGROUND INFORMATION A Pedigree chart is a device used to trace genetic traits through a number of generations.

SOLUTION: The pedigree chart model can be used to trace genetic inheritance.

PROBLEM: During the early Paleozoic, the amount of carbon dioxide in the atmosphere was much greater than it is today.

SOLUTION: During the early paleozoic, the amount of carbon dioxide in the atmosphere was much greater compared to today.

PROBLEM: However, exposure to ultraviolet radiation can  increase the amount of pigment in the skin and make it appear darker.

SOLUTION:
Exposure to ultraviolet radiation can increase the amount of pigment in the skin and make it appear darker.