HOW EARTH SUPPORTS LIFE PART 2
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- You guys may already know about how Sun was formed. But let me still review it for you, in the last discussion I talked about Solar Nebula Cloud, that Solar Nebula Cloud was spinning so fast, and as it spin, the materials get closer to each other, that made the proto-sun.
- And the gravity and force outside the Solar Nebula Cloud is now balance. As a result, the gravitational energy keep converting into thermal energy.
- And that is how Sun was formed. Now, how does Sun relate to the topic today? It is because Sun has a big help to life on Earth. Sun radiates light and heat, or solar energy, which makes it possible for life to exist on Earth. Like what I've told you before, the universe was very cold but as time goes by, it changes through the eras I've tackled.
- Earth has all the things that humans need. Like what is in a ecological cycle. In every ecological cycles, there are presence of plants, animals, and the Sun. The Sun is always present. So if there is no Sun or sunlight, the plants won't grow because the soil do not have enough nutrients, so that means there will be no food for both animals and humans.
- Not only that, some of you may think, there are other planets, but why are we on Earth? It is because there are things that only Earth has, that will make people, animals, and plants to survive. Also let me just tell you guys that Earth is the 3rd planet that is nearest to the Sun. Now, let me tell you a few things why we are on Earth and not on the other planets. One is because, Earth is in the right distance from the sun. Also, Earth has all the basic necessities that are required for an organism to survive. And the temperature and atmosphere of the earth make life comfortable for the organism. Ang lastly, Earth is the only known planet to have consistent, stable bodies of liquid water on its surface. And that is it for today's class. I hope you enjoyed the story today! Thank you class!
- YEEEES! I enjoyed the story today, ma'am! Goodbye and thank you!
- WOOOOW! Goodbye and thank you, ma'am!
- It was a fun story! Thank you and goodbye, 'til next time!
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