Macro evolution takes quite a long time. It's not something you can see happening in your life time... or even in recorded history. So it's not like a few years before you were born some cows decided to go for a swim and today you've got whales.
This concept of evolution is inherently flawed, it's as bad as saying "If people evolved from monkeys, then why are there still monkeys?
When the ancestors of whales were evolving, there were no whales... and there were also NO COWS. Likewise, when the ancestors of humans were evolving, there were no humans or monkeys.
The ancestors of cows and whales was a sort of small creature like a hippo. Some of these hippo like creatures spent a while swimming about in the rivers and streams. Then alligators and such found out that they were good to eat. Some of the hippo like creatures got out of the water, and spent time on land. Others went farther out to sea. At first, they ate sea grass around the salty river deltas where the alligators don't go because they don't like the salt, and where the sharks don't go because they don't like shallow water. They may have developed a taste for sea animals that got in the sea grass, and maybe discovered that they could suck them into their mouths, or chomp through their shells with their teeth.
As these pre-whales bred, the ones that couldn't swim very well got eaten, or died, and the ones that could survive better in the ocean made more babies. At first, the freaky ones that were born with webbed toes gained an advantage, and bred until there weren't any of them in the ocean without webbed feet. Then the ones with upturned noses gained an advantage from not having to stick their head so far out of the water. Then the ones with flat tails gained an advantage, and there was a time when they were web-footed, flat-tailed, hippo like creatures with upturned noses. Some of them mutated, and a few freaks with noses farther up their heads were born... and these gained the advantage, and so on until we have all the thousands of species of whales, with big flippers, and spouts, and baleen, and teeth, and narwhale noses...
Meanwhile, up on land, there were the hippo-like creatures that got scared of the alligators, and stayed away from the rivers... well, they had to go there for water though, and sometimes the gators would get them. Some of these critters had really big toenails, and knobby skulls. The gators had trouble biting the heads off of the ones with the knobby skulls, and the ones with big toe nails could sometimes kick the gators really, really hard. So all the ones with knobby skulls, and big toe nails tended to survive and breed, while the ones with smooth, soft skulls, and weak toes got eaten. Over the years, mutations occured, and the knobs turned into horns, and the big toes turned into hooves, and they developed eight stomachs to chew through all that grain... and then some humans (Who were evolved not from monkeys, but from some creature with traits similar to both human and monkey) came along, and invented lassos, and corrals, and branding irons, and six shooters, and the abbatoirs, and corn feed, and steriods, and... HAMBURGERS!
and then one day, one pair of humans that had come from a long line of successful breeders gave birth to you, and you were eating a hamburger, and watching the Discover channel or something, and it came into your head to ask why whales look nothing like a hamburger patty.
2006-08-15 12:48:03
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answer #2
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answered by ye_river_xiv 6
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So which books on evolution have you read? Or are you getting all of your information from Answers in Genesis, who is run by people who uses the Dr in front of their names, but never attended school for science?
You can't hardly tell other people to study, if you aren't willing to do it yourself.
2006-08-15 12:34:37
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answer #3
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answered by Kithy 6
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