I think a Comet seeded the oceans with mircoorganisms from outside the solar system, or something like that.
2007-12-30 02:17:01 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
That is one good possibility. Everywhere we have looked on this planet, we find micro-organisms. This includes deep in mines, oil wells, and volcanic vents (extreme-ophiles who thrive on high temperatures, high pressures, strong acids, etc).
Another possibility is that live came to be out of natural processes. We know that electrical discharges (lightning) can convert the raw chemicals that we believe were present on the early earth into aminoacids and proteins that are the building blocks of all life.
It is a fascinating question but one that is very difficult to answer for certain because it was such a very very long time ago. If we find life on Mars or the moons of Jupiter or on comets or meteors, that would be very significant for our theories of how life started here (of course it would pose many more new questions such as where did the life come from on Mars, etc).
Very good question!
2007-12-30 02:28:17 · answer #1 · answered by Gary H 7 · 1⤊ 0⤋
Some form of life must exist everywhere in the universe and what makes life on Earth different is environmental. As the environment changes life changes-its that simple. Prior to the rapid rise of advanced forms of life(~600bya)the environment on Earth could not support much life but then the environment must have changed and has been changing ever since. The record of the changes is being discovered by geologists all the time these days in the rocks that make up the landmass of Earth. Prior to ~600mya life existed on Earth in an environment very different than after that time so something happened at that time to change the environment in a way that started what we call evolution. If the right environment existed again here or else where other forms of life would develop. So, life must be quite common everywhere in the universe.
2007-12-30 11:29:03 · answer #2 · answered by jim m 5 · 0⤊ 0⤋
I doubt that any living organism survived traveling through space.
All the things needed for life are found on Earth. At least life as we know it. Therefore, something had to happen to bring all this together under the correct circumstances. Now perhaps the force from your comet was the factor. Someday we will know. We know the building blocks of life, it will not be to very long before science figures out how they all game together.
2007-12-30 10:47:16 · answer #3 · answered by Anonymous · 1⤊ 0⤋
The origin of life is one of the great mysteries in the Universe. To determine the origin of life, scientists are investigating the problem in several different ways. Some scientists are studying life on our own planet. Some scientists are seeking out life or fossil life on other planets or moons in our solar system. And other scientists are trying to detect life in other solar systems, either by measuring life's effects on the atmospheres of distant planets or by measuring artificial radiation like radio signals that may be produced by advanced life.
When the earth formed some 4.6 billion years ago, it was a lifeless, inhospitable place. A billion years later it was teeming with organisms resembling blue-green algae. How did they get there? How, in short, did life begin? This long-standing question continues to generate fascinating conjectures and ingenious experiments, many of which center on the possibility that the advent of self-replicating RNA was a critical milestone on the road to life.
2007-12-30 10:40:43 · answer #4 · answered by Sparkle M 3 · 1⤊ 0⤋
A good theory, But no-one know's what happened, :- ).
A theory is that the vital things needed for life (Oxygen rich Athmosphere, Carbon, etc) mixed with water, and divided (Dunno, never tried making life forms :- ),
There are hopes that Mars's ice-cap, and Europa will hold frozen or trapped life forms!!!)
2007-12-30 13:38:14 · answer #5 · answered by Wales_For_A_Republic_93 2 · 0⤊ 0⤋
I believe life here (and only here!) came from the Will of God. From nothing all was created.
Explain to me the "evolution" of the flagellum.
Hah! Gotcha.
2007-12-30 11:12:32 · answer #6 · answered by craig b 7 · 0⤊ 1⤋
well, for people that believe in God, they might agree with me that he created Adam from some sand and Eve from Adam's rib bone and they had tons of kids, their kids had tons of kids, and so on.
But if we're discussing about dinosaurs and stuff like that then I ain't sure... :S
2007-12-30 10:27:51 · answer #7 · answered by Anonymous · 0⤊ 2⤋
I thought God Created it, Adam and Eve and all that. And in seven days no less.
2007-12-30 10:25:53 · answer #8 · answered by Woosie 4 · 0⤊ 2⤋
FIRST AMOEBA APPEARED on the earth
2007-12-30 10:23:06 · answer #9 · answered by AKKOO 2 · 0⤊ 1⤋