Activity 2; Your school is asked to vote on whether they would help start a colony on a new planet or a city under the ocean. Gr
ade 4 chooses to create a city under the ocean, but they must present evidence as to why an under the ocean city is better than a colony on a new planet. Persuade the rest of the school using information you've learned about the oceans this week
An ocean is a body of water that composes much of a planet's hydrosphere about 70percent of the earth surface. This provide enough area to build a city in than starting a colony in a new planet which one is not sure if this planet is habitable to build a city on. About 70 - 80% of the oxygen we breath is produced under the ocean, which makes it possible to live under the ocean, living under the ocean is considered as an healthy diet and finally, building is possible under the ocean, builders dig a trench in the ocean floor. They then sink pre-made steel or concrete tubes in the trench. After the tubes are covered with a thick layer of rock, workers connect the sections of tubes and pump out any remaining water within that are to commence building.
