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Natural Forces Over the course of history many species have become extinct. Species may become extinct because of changes in climate (i.e.
Fortunately, they have survived on farms and ranches and are no longer endangered.
Species that live only on islands can also be easily hunted to extinction.
If these seedlings survive to produce their own seeds, the species will be saved.
Questions for Thought: Mauritius is a medium-sized island that is extremely far away from any mainland. Birds and bats are frequently responsible for the natural pollination and seed dispersal of trees.
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.
Perhaps the most famous of these was the extinction of the dinosaurs, which may have been due to a large meteorite striking the Earth.
Human Interaction Today many conservationists are concerned with human interaction causing species to become extinct.
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.