Essay On An Organism That Is Not Extinct

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Most natural extinctions are isolated events that happen over a fairly long period of time.

Some, however, are major events that can cause mass extinctions and happen quickly.

Recently a scientist noticed that a certain species of tree was becoming quite rare on Mauritius.

In fact, he noticed that all 13 of the remaining trees of this species were about 300 years old. Since the average life span of this tree was about 300 years, the last members of the species were extremely old.

Now, more than 300 years after one species became extinct, another was to follow as a direct consequence. Luckily, some creative people discovered that domestic turkey gullets sufficiently mimic the action of the dodo bird’s digestive system.

They have used turkeys to begin a new generation of the tree, which is now called the dodo tree.This is because human interaction has increased the rate of extinctions beyond what normally should occur in nature.More extinctions reduces the planet's biodiversity and can have adverse affects for all life on Earth.They would soon die, and the species would be extinct.Was it just a coincidence that the tree had stopped reproducing 300 years ago and that the dodo bird had become extinct 300 years ago? It turns out that the dodo bird ate the fruit of this tree, and it was only by passing through the dodo’s digestive system that the seeds became active and could grow.Animals that are classified as "endangered" are at risk of becoming extinct. This means that the only surviving members of the species live in captivity, like in a zoo. Today many animals are endangered or have become extinct due to the influence of humans.Some of the ways that animals become extinct are described below.Although the dodo bird became extinct in 1681, its story is not over.We are just beginning to understand the effects of its extinction on the ecosystem.Natural Forces Over the course of history many species have become extinct. Species may become extinct because of changes in climate (i.e.the ice age), competition with other species, a reduced food supply, or combinations of all of these.

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