The article states that there are two ways to describe the origin of the Earth’s oceans and provides two reasons to support this.
However, the professor explains that these ways are not so correct and refutes each of the offered reasons in the article.
The article claims that the water came from outer space.
The reason is the lack of water on other planets.
However, the professor states that people cannot be sure about this statement, because there are not a lot of evidences.
For example, scientist cannot learn the underground of Mars at this time, but it is possible to find water there in the near future.
The reading says that the water could come from comets.
Deuterium was found not only in the Earth’s oceans, but also different comets.
But the professor says that it isn’t be an evidence, because comets have double the amount as the oceans.
November 2015
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