Please choose the correct answer to the question: What shows that the Earth being tilted on its axis causes ones side of the Earth to receive less energy from the Sun than the other side?

Answer1: summer in the USA, winter in Australia Answer2: snow will be on the North Pole instead of the South Pole Answer3: seasonal changes take place Answer4: some countries are warmer than others

Answer format: answer1/answer2/answer3/answer4
Answer: answer1