If earth was not tilted on its axis, what changes would you expect to see in the seasons? summer would last much longer than winter. winter would last much longer than summer. temperatures in summer and winter would be more extreme. temperatures in summer and winter would be very similar.

If the Earth weren't tilted on its axis, there would be no seasons. And humanity would suffer. When a Mars-size object collided with Earth 4.5 billion years ago, it knocked off a chunk that would become the moon. It also tilted Earth sideways a bit, so that our planet now orbits the sun on a slant. so the seasons would be similer.

Hope This Helps! :)

D is correct. Edge. Thanks to who commented it.