how is it possible that plants came to earth?when earth was barely froming the conditions are un stable for any cells,dna or any thing even afeter it was done froming how is it possible that plants,plants cells came to earth,maybe alians brought them here or somthing?Post your ideas

In the beginning, there was a quantum fluctation, and, suddenly, the Big Bang. From the Big Bang came the debris from it, and the debris, molten, slowly started to form groups, and the resultant force of gravity forced certain globs to cool into near-spherical balls.

As the Earth cooled, an atmosphere slowly formed around it, and eventually, after it started to rain, something caused the emergence of the first life-forms. Perhaps amoeba were created during the forming of the Earth, but, I know that, after it first started to rain, that's when life began to evolve on Earth. As did everything else, so did plants emerge from nothingness and become what they are today.

EDIT 1: I remember hearing something about amoeba being created inside of the rocks as they cooled, due to certain elements and compounds being introduced to one another.

Do ameba breath oxygen because there would be none only lots of toxic air

The fact that all the toxic air was there might have helped in the creation of life. Who knows. *shrug*

I know a little bit about this. Cells cannot travel through space on, say, comets or debris because of the radiation of space sterilises the asteroids. So life had to have been created on earth. That is not to say that aliens did not bring it down here. Francis Crick, the discoverer of DNA double helix in 1973 said that it was too complex to just begin from nothing, and he beleived in it being brought here by beings from space.

We cannot prove any of this in the end, but I have also read that lightening can strike the ocean and create simple sugars. Scientists have been able to duplicate the experiement in labs and with various different starter chemicals been able to change them into simple sugars.

DNA research is still going on to go backwards in time to follow each mutation species by species, to take us back to the beginning. The first multicellular organism was the sponge.

Thanks again excel and Rainbow rohan

Ask your science teacher to explain

Do not trust Science Teachers.

My father's told him that the Sun had its own oxygen supply.

As opposed to you ?

Indeed.

The detection of gravitational waves may help demystify this question.

lol

About 25 years ago, two British astronomers, Fred Hoyle and Chandra Wickramsinghe, proposed that comets might be the Johnny Appleseeds of life, carrying vital spores from star system to star system, an idea that is known today as panspermia.

If the tail of such a life-loaded comet were to brush the Earth, it might pass some of its frozen microorganisms into the atmosphere where they could descend to our planets surface. The two astronomers ventured that this might account for the start of life on Earth.

They also made the disturbing suggestion that panspermia could spread disease.

It could, if the microorganisms could survive the re-entry, or, rather, just plain entry into the atmosphere.

The problem I have with the comet theory of how life started is, well, it could have as easily happened on Earth as it could have come from the sky.

Panspermia _could_ spread disease, but it's not very likely. It's more likely for a woman to get a man pregnant than that.

I agree that its not likely,but not THAT unlikely

With rapid genetic mutation, you never know.

What exactly is rapid genetic mutation??

It seems that hazzard is correct - sorry my info was outdated:

http://www.panspermia.org/oseti.htm

The term is intuitive. I've heard of cases where, for some reason, people mutate-- while the term stands to mean they just up and change genetically quite suddenly, now that I think of it, I'm more of the mind that it was just something they were born with, and some trigger set it off, and the way it was set off makes it look as though they suddenly mutated (as in, some part of their body changed DRASTICALLY-- heard of at least two cases of natural biological sex changes).

*reads link* Oh, this. I'm still of the mind that it's pretty darn unlikely that any type of disease, at least, any kind of really _threatening_ diseasae could come from it.

the creation of life is a simple one, recreatable within a laboratory setting. you've got all these gases, apply a little electricity, and neucleic acids and other organic compounds form themselves. an oxygen rich atmosphere didn't happen until much later, when cyanobacteria developed and began a primitive form of photosynthesis.

Finally somebody gives a decent response! Thank you!

The idea of cells from space is kind of ridiculous. Cells are tough, but they can't survive space and the difficulties it brings, not to mention that we all know how rare it is for a body on the scale we're discussing to hit earth. As far as I know, and I'm not the most well-informed on the subject, the last big thing to hit Earth hit 65 million years ago and hasn't repeated since then.

Plus, of course, the cells on this cosmic body would still have to have come from somewhere, meaning these chemical processes or something similar still had to happen at some point.

(edit)

Ah, good point. I'll edit my post to reflect that.

Plus, if "life" was brought to this Earth by some sort of alien means, we would be right back to the beginning with where THAT life came from.

For is there is life...then there must be a purpose for life. Nothing is created from nothing. Things must be created by a creator in order for it to be apart of this world. Something created us....and your purpose can only be found after death. Not everything can be figured out with science. But simplistic things can be figured out with science. Life is what you make of it...but you must choose your own destiny from the choices that you have. Probability is the reason why nobody is perfect....because if you were perfect you could roll a dice the same way every time and get the same results every time....this world is ran off of probability. There must be a reason for this...perhaps a higher more intellectual being or an alpha omega created us with his/her/it's mind. And perhaps they were created by that same intellect. Death is the answer to life....you are born to live in the shadow of death.

Agree with xstortionist
It's amazing when I think of the Human/Speices Body
and they way it works seems beyond science.

But wasnt life unstable even to bacteria?

life was good for bacteria back then. the early atmsophere was mostly carbon dioxide, water, hydrogen sulfide, nitrogen hydride, etc. for an early life form photosynthesize carbon dioxide and water, the two of the most abundant things, life was good indeed. and about the other gases in the air? look how bacteria live in thermal vents deep in the ocean, and you'll get some idea about the hardiness of the simplest of organisms.

and as for xstortionist's statement, i do not believe that life needs a creator or higher purpose to be possible or meaningful. a flower is beautiful however it may have come about. and people will do the things people do whether or not there's a higher being watching over us. i like to think that life is special not because it was a gift, but because we (as living things) have worked so hard to come this far, and i wish i could be around to see how far we go in the times ahead.

ahh, science and philosophy... stop me if i ever wax poetic again.

There are tales of plants that scream when chopped at and trees that howl during forest fires. One of the Bush administration related a tale a few years back claiming that he felt millions of souls perishing when the White House lawn was mowed. A rose will cry on Valentines day, just as a daisy will laugh on the first day of summer.

That doesn't create life, just "organic" compounds.

Life began on the ocean floor

This theory kind of makes sense as, iirc, some parts of a cell were clearly their own thing at one time (ie mitochondria).

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