One theory about the extinction of dinosaurs is that a huge asteroid or comet hit the earth WITH SUCH FORCE that soot or dust in the air blocked out sunlight.?

This theory, known as the asteroid impact hypothesis, suggests that a massive asteroid struck the Earth around 66 million years ago, leading to widespread fires and the release of soot and dust into the atmosphere. This debris would have blocked sunlight, drastically reducing temperatures and disrupting photosynthesis, which severely impacted the food chain. As a result, many species, including dinosaurs, faced extinction due to the abrupt environmental changes. This event is supported by the discovery of the Chicxulub crater in Mexico, which corresponds to the timing of the mass extinction.