Aliya - Camels and Their Humps
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Camels: What is behind their humps
Survival of the Fittest
Some camels have one hump while others have two. One-humped camels are referred to as Dromedary camels and two-humped camels are called Bactrian camels. Dromedary camels have a coat of hair that they keep on all year round, and Bactrian cames grow on hair over the winter and it falls off during the spring.
Variation in Population
Evolution = Change Over Time
There are more one humped camels than there are of two humped camels. Because Bactrian camels are being domesticated, the amount that is remaining and is wild is so low that these camels are endangered. The thing that is making Bactrian camels have lower numbers is the fact that people domesticate a lot of them. One humped camels drink a lot of water really fast. They can carry really heavy tings for a long time, too. They are definitely better adapted to the environment where they live in.
Competition and Struggle for Existence
One humped camels are very fast, and they can carry very heavy loads for a long period of time. These traits help them survive in the desert, since they need to be able to last for a while in this heat. They normally have one child, sometimes twins. None of them die off. They pass along the same genes.
These camels are going to be domesticated by humans more and more, and even though the one humped camels are domesticated, here are still more of them. These camels are going to go extinct soon since there are going to be no more wild ones left. The one humped camels will continue to produce offspring the same way, there just won't be anymore two humped camels.
The environment selected Dromedary camels. There are no more wild Bactrian camels left in the desert, there are just Dromedary camels now. There is no changing to do for the Dromedary camels, they are already adapted to the environment.
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