Gasoline is refined from crude oil through a process called fractional distillation, where crude oil is heated and separated into different products based on their boiling points. Additional chemical processes then transform some of these fractions into gasoline suitable for vehicles.

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Salmonella contaminate poultry and eggs when bacteria live in the intestines of infected birds and spread through their droppings, which can get on eggshells or into the meat during processing. Infected birds can also pass the bacteria directly into developing eggs before the shell forms.

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Hail is balls of ice that form in thunderstorms when raindrops are carried high into the cold upper atmosphere and freeze in layers. They fall to the ground when they become too heavy for the storm's updrafts to support.

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Severe thunderstorms form when warm, moist air near the ground meets cold, dry air aloft, creating unstable atmospheric conditions that fuel powerful updrafts and downdrafts. Three key ingredients—moisture, instability, and lift—must combine to produce these intense storms.

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Electric vehicle batteries degrade over time due to chemical reactions inside the cells that reduce their ability to store and deliver energy. This degradation happens naturally through use, charging cycles, and exposure to heat.

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