Did all life originate in the oceans?

Answer 1

I think that's a limited question.

It is possible that the building blocks of life exist is huge clouds in outer space, and that young planets passing through these clouds that have their oceans 'impregnated'...

Just a thought that takes the theorising to a different level.

Answer 2

Although most scientists would probably say yes, the answer is we really haven't got a clue (IMO). Life could have developed deep within the earth in cracks feeding off methane and hydrogen sulfide and not connected to sunlight at all. Some of the most primitive forms of life feed in this way. The life at the deep vent in the ocean may provide clues to the subterranean life.

Answer 3

The origin of life is believed to be in the oceans.So we can say that life originated in the oceans as long as we don't have an alternative strong enough to believe or anything else is proved.It was the unicellular organism which was the first living form.Life evolved from this unicell.

Answer 4

That is a definite yes. There are some things that are similar in almost all organisms. One thing is the presence of a moist environment to reproduce. If you look at aquatic animals, many release their sperm or eggs directly into the environment (in this case water) and allow for reproduction to occur without any bodily cavity or egg. When we look at land animals however, almost all of them (i actually cant think of one that doesnt) create some sort of aquatic habitat for reproduction and fertilization to occur. For example, in birds and almost all reptiles we see amniote eggs. In mammals we see the placenta and the marsupium (and the platypus egg too). All of these land animals in some way or another created an aquatic environment to reproduce...indicating that it was necessary for animal development to be in some aquatic environment. This adaptation implies that animals needed to create an aquatic developmental habitat to leave the oceans. If life was established on land, we would likely see some kind of reversal.

Also, the chemosynthetic organisms at the bottom of the oceans seem to indicate orgins of life.

Answer 5

Yes.

Answer 6

we came from the sun

Answer 7

that's our current understanding....HELLO LEVEL 5!!!!!

Answer 8

YES.