If there is not enough air on land, can humans migrate to the ocean to survive?

If there is not enough air on land, human beings. It is necessary to find an alternative place to move. Living on another planet is more effective and less difficult than living in the ocean, because there is not enough air on land, and the oxygen content in the ocean will also be affected, and the danger of the ocean is not low at all.

No one knows how many ancient creatures there are in the ocean. Many ancient creatures in the ocean appeared in the fourth or even the third extinction, that is, they have existed since the end of Permian and Triassic. Up to now, they have existed for 34 1 year, and humans have appeared since their ancestors. However, we still don't know how mysterious and scary the ocean was five or six million years ago.

Humans depend on the land for survival. It is very difficult to survive in the ocean. If there is not enough air on land, the air in the ocean will also be affected. To say the least, with the sea level rising, human beings can't live on land, or there is almost no land. Then we must go to the ocean and build corresponding cities at sea. This may be a very expensive thing, and not all countries have this ability. There is a movie called "Future Water World", which tells that the sea level rise has flooded most of the earth's land, and only the Qinghai-Tibet Plateau has survived. There are some directions for human evolution, because some people have evolved gills that can breathe like fish in seawater.

We are constantly exploring the outer universe, looking for places similar to the earth's environment, and even allowing people to emigrate, because we have realized that the earth's environment is not absolutely stable. Our previous five mass extinctions are enough to prove that the regional environment will change periodically, about 50 million to 200 million years. Because of the five mass extinctions, the interval was shortened by 50 million years, 65.438+0.5 billion years.