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greentumble.com/10-reasons-why-species-become-endangered

The extinction rate of species today is more than 1,000 times higher than the natural extinction rate. Explore the 10 reasons why species become endangered.

www.thoughtco.com/how-species-become-endangered-1181928

Today, more and more animal and plant species are on the verge of extinction because of a variety of major factors that cause a species to become endangered, and as you might expect, humans play a role in quite a few of them.In fact, the biggest threat to endangered animals is human encroachment on their habitats.

www.wisegeek.com/why-do-animals-become-endangered.htm

Animals can become endangered for a number of different reasons, but many experts believe that loss of habitat is frequently the main cause. Pollution can also damage a population, as can overhunting and overfishing. In other words, the activities of human beings are the biggest problems.

sciencing.com/causes-animals-becoming-endangered-6564385.html

Increasingly the activities of man have caused a large numbers of animals to become endangered. Small populations are extremely sensitive to the factors causing endangerment, whether one relies on the ordinary sense of the word or the endangered species definition embodied in federal law.

www.factmonster.com/.../why-do-animals-become-endangered

Humans are largely responsible when animals become extinct, endangered or threatened. Here are some reasons why animals become endangered: Destruction of Habitat. Humans destroy precious habitat--the natural environment of a living thing--when they fill swamps and marshes, dam rivers and cut down trees to build homes, roads and other developments.

www.nationalgeographic.org/encyclopedia/endangered-species

An endangered species is a type of organism that is threatened by extinction. Species become endangered for two main reasons: loss of habitat and loss of genetic variation. Genetic variation is the diversity found within a species. It’s why human beings may have blond, red, brown, or black hair ...

www.cram.com/essay/Reasons-Why-Animals-Become-Endangered...

When assessing the status of a species, one of the factors for the IUCN is that the species must be declining at a certain rate over the course of a certain number of years. People need to work to protect endangered species. There are several different reasons why animals become endangered and even extinct.

hubpages.com/education/Animals-Endangered-and-Homeless

5 Reasons Why Animals are Endangered. Updated on March 9, 2013. kirstyn31. more. Contact Author. ... There's a number of reasons why people would love to barricade poacher's. There are rewards set over $4,000 to find someone who shot and killed a bald eagle. ... gases combine in the air over time and become apart of our water cycle making ...

www.amnh.org/.../why-are-so-many-animals-endangered

An animal is called endangered when there are so few of its kind left that it is in danger of becoming extinct — disappearing from the world forever. There are many reasons that animals and plants can become endangered or die out altogether.

www.wonderopolis.org/.../how-does-a-species-become-endangered

Today, many of us are aware that certain animals, such as rhinos and polar bears, are endangered species. What many might not realize, though, is that the endangered species list contains thousands of species, and they're not all animals. Indeed, many of the species you'll find on the list are ...