1. In a leap year, there are 28 days in February.
2. A humming bird flaps its wings 100 times in one second.
3. There are more months with 31 days than months with 30 or less days.
4. When the moon is between the Earth and the Sun, we see a full moon.
5. A rectangle is a type of square, and a square is a type of rectangle.
6. This is the correct spelling: bouyant
7. Cheetahs can run up to 70 miles per hour.
8. Pyramids were build during the Middle Kingdom in Egypt.
9. Apple seeds can be poisonous if you eat too many in a certain period of time.
10. Butterfly is a compound word.