Climate science

Which relationship involving Pennsylvania climate science is correctly stated?

• Elevation has no meaningful connection to Pennsylvania climate patterns.
• Physiographic provinces are political districts created by the state legislature.
• All Pennsylvania rivers drain through the same watershed.
• Lake-effect snowfall near Erie demonstrates how mesoscale atmospheric processes can create sharp local climate contrasts.

Which idea about Pennsylvania climate science is most accurate?

• Lake Erie has no effect on northwestern Pennsylvania’s weather.
• Observed long-term warming trends do not imply that every year or season will be warmer than the previous one.
• Pennsylvania has uniform physical geography with little regional variation.
• All Pennsylvania rivers drain through the same watershed.