The topic of my article is the return of giant tortoises on the Galapagos Islands .
Reptiles are threatened with extinction.
Thanks to the researchers , these animals are now living on the islands.
The population was threatened by wild goats brought by the fishermen.
Goats eat the plants which feed on turtles .
Turtles are natural enemies of whales that prey on them .
The first order of business was to eradicate the goats.
conservationists brought in trained gunmen on helicopters to hunt and kill all of the goats.
National Park Service reintroduced captive-bred tortoises to the island and marked and recaptured them over the years.
The researchers found after analyzing the population has stabilized, and over time the wild animals that were not born in captivity.
Thanks to the people animals can live and reproduce in the wild.
The worrying thing is that it changes the flora .
Grow more trees and less cacti that are diet turtles , tree hinder movement of these animals.
January 2015
赶紧投票吧！ 