1. Winter is a hard time for animals. It is difficult for them to find food. Many of the animals hibernate or sleep more during winter.
2. June 21 marks the day when the Earth is turned the most toward the Sun. It is the longest, sunniest day of the year.
3. December 22 marks the day when the Earth is turned the farthest from the Sun. It is the shortest, darkest day of the year.