Question

passage b: the art of the storm
tornadoes are among natures most destructive forces, yet their formation is a precise and delicate process. most tornadoes form from powerful thunderstorms called supercells. within these storms, warm, moist air collides with cool, dry air, creating a spinning column of air. as this column tilts and stretches, it can narrow and spin faster, eventually touching down on the ground as a funnel. while they may seem chaotic, tornadoes are a predictable result of specific atmospheric conditions.
main idea: what is the most important point about how tornadoes are formed?
supporting details: list two facts from the passage that support your main idea.

Explanation:

The main idea is that tornado formation is a precise process resulting from specific atmospheric conditions. Supporting details are key facts from the passage explaining this process.

Answer:

Main Idea: Tornadoes' formation is a precise process resulting from specific atmospheric conditions.
Supporting Details: 1. Most tornadoes form from powerful thunderstorms called supercells. 2. Warm, moist air collides with cool, dry air, creating a spinning column of air.