Which of the following statements about jet streams is true?

Jet streams are high-altitude, fast-flowing air currents predominantly found in the atmosphere at altitudes of about 30,000 feet. They play a significant role in influencing weather patterns across the globe. These air currents typically flow from west to east and can affect the development and movement of weather systems, including the position and strength of surface low and high pressure areas.

The movement of jet streams can lead to changes in temperature and precipitation patterns, which is critical for both meteorology and various outdoor activities, including sailing. Their influence is especially evident in mid-latitude regions, where they often separate colder polar air from warmer tropical air, leading to significant weather phenomena such as storms.

This ability of jet streams to impact weather makes the statement about their influence on weather patterns accurate and significant in understanding atmospheric dynamics. The other statements about jet streams are incorrect as they either incorrectly describe their geographical presence, their flow pattern, or their relevance to aviation.