2006-09-02 03:34:15 · 6 answers · asked by Carolyn R 1 in Science & Mathematics ➔ Earth Sciences & Geology
Well the reason is
Simply bcoz they r most easily formed and they can survive almost effortlessly.
They mass produce (u know in 100000s) and hence even if only 1% of the poplulation survives the work is done!!
2006-09-02 03:37:57 · answer #1 · answered by Hitesh Bansal, The Quiz Master 2 · 0⤊ 0⤋
Because there are more of them than of any other species, by weight. If you look at the oceans, there are two types of plankton; phyto-plankton which are plants and zoo-plankton, which are fish eggs and unicellular animals. If you have a very fine-mesh net, in the right places, you can scoop out buckets and buckets of nutritious fish-flavored soup out of the ocean every day! And this is only on the surface.
In the ocean depths, there are single cells that live on decaying matter and the hot sulfur from geothermal vents. Life on the land is very thinly spread, by contrast, and we do not spread through the thickness of the atmosphere, the way ocean life spreads throughout the entire volume of the oceans.
Add the fact that they multiply so rapidly. The average bacterium takes only twenty minutes before it divides again. Yes, many of them die or are eaten, but there are enormous quantities of them.
Have you heard of the fungus in Minnesota that is supposed to be the largest single living thing on Earth...? They discovered that all these fields of mushrooms had the same root system together, and were actually one organism. If you think of single-celled creatures in that way, connected in time instead of space with a root system, you will see how unicellular species are the largest portions of the biosphere. I hope this helps you to understand.
2006-09-02 04:01:00 · answer #2 · answered by cdf-rom 7 · 0⤊ 0⤋
Hmmmmm..... I thought that ants made up most of the earth's biomass. You might be right since ants are not aquatic creatures.
I could hazard a guess: it takes single cell organisms "no time" to reproduce -- that's why they're called organasms. ;-)
2006-09-02 03:39:55 · answer #3 · answered by Ever Learn 7 · 0⤊ 0⤋
bacteria always have and always will rule the world. we are meaningless pawns in there chess game. think about it. nothing really gets done w/out them
2006-09-02 03:41:20 · answer #4 · answered by doc2be 4 · 0⤊ 0⤋
Because we haven't found a reason or a way to kill them yet!!
2006-09-02 03:39:51 · answer #5 · answered by Bear Naked 6 · 0⤊ 0⤋
who cares...........................if udo leave it cause it won't help u
2006-09-06 02:38:24 · answer #6 · answered by blackcat_bob 2 · 0⤊ 0⤋