The last question I asked was about people.I understand about the pigment differences,still no explanation about, let's say, different races eye shapes.But what about a lake, size maybe half a mile in circumferance.How all the different species of fish that are in this lake?They have the same location.Same ingredients for life.There are so many different species of fish in the same lake.Everything about their surroundings is the same.
2007-02-05 16:31:03 · 13 answers · asked by Rosalind S 4 in Society & Culture ➔ Religion & Spirituality
Mutations are random.
Would it be easier if I explained this stuff over IM?
2007-02-05 16:43:05 · answer #1 · answered by eldad9 6 · 1⤊ 0⤋
Ok, going back to your previous question: the difference between groups of people is due to accumulated differences in genetic code. If those differences build up enough, the different populations can no longer inter-breed. Now you have separate species and you can't go back (will point out that humans are about as far away from that as you can get - there is less genetic difference within the whole human race than there is between two sibling gorillas). Hence the tree of life is a branching bush.
Now sea levels have changed up and down by hundreds of metres over geological time, continents have moved, blocks of land risen and fallen, rivers switch courses frequently, and sediment builds up and erodes away. Environments and geographical barriers change.
So the ancestors of the separate species of fish could have diverged 100 million years ago, on the other side of the world, and occupy completely different niches. Or they could have diverged within the lake, fairly recently. All it takes (usually) is a semi-divided population.
You can read about speciation (which is observed in modern populations) at wikipedia.
2007-02-06 01:26:28 · answer #2 · answered by Anonymous · 1⤊ 0⤋
It is an intricately complicated theory. Maybe the lake used to be part of the ocean and over time it got closed off and all different fish were trapped there? Or maybe the fish evolved while eating different plants and organisms that can be found in the same lake?
Just because we can't find an answer doesn't mean the whole theory is wrong. If that were the case, then NO ONE would believe in Creation because there are many inconsistencies in THAT belief and people just choose to ignore them. At least scientists are willing to search for the truth instead of turning a blind eye to any discrepancies.
2007-02-06 00:53:00 · answer #3 · answered by God Fears Me 3 · 2⤊ 1⤋
There will be fish to take advantage of all the environmental aspects of the lake. Some fish eat plants, some eat insects, some eat copepods, some eat other fish. Some like the deeper colder water, some like the shallow warmer water near the shores. All the fish, and other organisms in the lake, keep each other in check so that one does not deplete the resources and all will have healthy populations.
2007-02-06 00:41:00 · answer #4 · answered by Sage Bluestorm 6 · 1⤊ 0⤋
There are different niches of life in all locations.
Put it this way....
Bacteria eat the dead things. The bacteria then feed the plants with their itty bitty bodies (along with the other dead animals in the lake). Then the little fish (and other critters) eat the plants. Then the little fish get eaten by bigger fish. The bigger fish eventually become too many and there isn't enough food for them anymore. Then the bigger fish start to die off. Then they feed the bacteria and the circle continues.
There are different niches in that lake that need to be filled. Different bacteria break down life in different ways, not all in the same way. Different plants do different things. etc. All life serves different functions to all other life.
I think you have a very bad need to go back to school and study evolution. In this case, its called a biosphere.
Its very obvious that you don't understand what you should have learned in high school. How you graduated, I'll never know.
2007-02-06 00:40:20 · answer #5 · answered by Anonymous · 6⤊ 0⤋
uh, lakewater is fed by rivers, where there are fishes and other marine life. all freshwater fish live in either rivers and streams, or lakes and ponds. So, it's not hard for fish species to travel from a lake to a river and so on, provided that the rivers are not too turbulent.
and you also have to remember that the landscape tens of thousands of years ago is not the same as it is today. flooding could easily distribute fish species to other locations. don't assume that just because today one lake is seperated from all other bodies of water, then all it's fishes evolved in it for hundreds of millions of years.
2007-02-06 01:02:45 · answer #6 · answered by JetAlone 2 · 0⤊ 0⤋
According to my belief, Allah (GOD) Has created each and every species in pairs with the passage of time these species may have adopted features to survive in their environment but form the day one these are different from one another.
As far as human beings are concerned, they are divided in different races, tribes, families and clans so that we can recognize them easily, but they are all children of one Fahter ADAM.
2007-02-06 00:44:05 · answer #7 · answered by ammar_shahjee 2 · 0⤊ 0⤋
Many different creatures flourish in the same general environments. And smaller fish are often food for larger fish
2007-02-06 00:38:01 · answer #8 · answered by Dawn G 6 · 3⤊ 0⤋
Why not? The small fish evolved to eat the algae, The bigger fish evolved to eat crustaceans, the biggest fish fish evolved to eat the smaller fish and the bottom dwellers evolved to eat the left overs. Perfectly natural.
2007-02-06 00:40:52 · answer #9 · answered by October 7 · 2⤊ 0⤋
Just because the creatures ended up in a lake doesn't mean they started there
2007-02-06 00:41:08 · answer #10 · answered by Anonymous · 1⤊ 0⤋