Answer and explanation

Correct answer: D. The tilt of the Earth's axis as it orbits the Sun

  1. Step 1: The tilt changes how directly sunlight strikes each hemisphere. Step 2. This produces the seasons. Answer: the tilt of the Earth's axis. Why not the others: these do not explain the seasons.

Practise more Life, Physical and Earth Science.

Free questions with an explanation for every one, and full timed GED Test (High School Equivalency) mock tests.