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<museum of natural history>
Yesterday I went to Museum of natural history. I learned about planet earth, inside of Earth, Earth's birth, volcano, the solar system, and dinosaurs...First, their are 8 kinds of planets. Their are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury and Venus are very hot, Earth is warm, and others are very cold. Because Mercury and Venus are near to sun. And others are far from the sun. Second, there are Cyanobacteria. Cyanobacteria are living cells that produce oxygen through photosynthesis. There little cells filled the Earth with oxygen. Which made the existence of various living things possible. Third, before we have 4 Era. Precambrian Era, Paleozoic Era, Mesozoic Era, Cenozoic Era. Yesterday was very fun and interesting day I think Thank you.
2013.07.21 고예지
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