Gregorio GomezHamlet QuezadaJuan Hernandez

An endangered species are species of organisms that face a very high risk of extinction. The phrase is used vaguely in common parlance for any species fitting this description, but its use by conservation biologists typically refers to those deigned Endangered in the iuc Red List, where it is the second most severe conservation status for wild populations, following Critically Endangered. There are currently 3079 animals and 2655 plants classified as Endangered worldwide, compared with 1998 levels of 1102 and 1197, respectively. The amount, population trend, and conservation status of each species can be found in the Lists of organisms by population.

The extinction of an animal species occurs when the last individual member of that species dies. Although a species may be "extinct in the wild," the species is not extinct until every individual, regardless of location, captivity, or ability to breed, has died.

Example: The extinction of dodo bird is usually blamed on

overhunting.

Among them we can find :1. Siberian Tiger2. Polar Bear 3. Pacific Walrus 4. Magellanic Penguin 5. Leatherback Turtle 6. Bluefin Tuna 7. Mountain Gorilla 8. Monarch Butterfly 9. Javan Rhinoceros 10. Giant Panda

New studies indicate that there may be as few as 3,200 tigers (Panthera tigris) left in the wild. Tigers occupy less than seven per cent of their original range, which has decreased by 40 percent over the past ten years. Continuing deforestation and rampant poaching could push some tiger populations to the same fate as its now-extinct Javan and Balinese relatives in other parts of Asia. Tigers are poached for their body parts, which are used in traditional Asian medicine, while skins are also highly prized.

The Arctic’s polar bears (Ursus maritimus) have become the iconic symbol of early victims of climate-induced habitat loss. Designated a threatened species for protection by the Endangered Species Act in the US, many polar bear populations will be vulnerable to extinction within the next century if warming trends in the Arctic continue at the current pace.

The Arctic’s Bering and Chukchi Seas are home to the Pacific walrus (Odobenus rosmarus divergens), one of the latest victims of climate change. In September of this year, up to 200 dead walruses were spotted on the shore of the Chukchi Sea on Alaska's northwest coast. These animals use floating ice for resting, birthing and nursing calves, and protection from predators.

Once threatened primarily by oil spills, Magellanic penguins (Spheniscus magellanicus), now face a larger threat as fish are displaced by warming ocean currents, forcing the birds to swim farther to find food. Last year hundreds of Magellanic penguins washed up on beaches around Rio de Janeiro, many emaciated or dead. Scientists have speculated that changes in ocean currents or temperatures, which may be related to

climate change, could have been responsible for their movement more than a thousand miles north of their traditional nestingarea in the southern tip of Argentina.

The largest marine turtle and one of the largest living reptiles, the leatherback turtle, (Dermochelys coriaceathe) has survived for more than a hundred million years, but is now facing extinction. Recent estimates of numbers show that this species is declining, particularly in the Pacific where as few as 2,300 adult females now remain, making the Pacific leatherback the world's most endangered marine turtle population

The Atlantic bluefin tuna (Thunnus thynnus) is a large migratory fish found in the western and eastern Atlantic and the Mediterranean Sea. Bluefin tuna is the source of highest grade sushi. Bluefin tuna fisheries are near collapse and the species at serious risk of extinction if unsustainable fishing practices in the Eastern Atlantic and Mediterranean are not stopped.

Scientists consider mountain gorillas (Gorilla beringei beringei) to be a critically endangered gorilla subspecies, with about 720 surviving in the wild. More than 200 live in the Virunga National Park, located in the eastern part of the Democratic Republic of Congo, bordering Rwanda and Uganda. War has been waged in areas around the park, with gorillas subject to related threats such as poaching and loss of habitat.

Every year millions of delicate monarch butterflies (Danaus plexippus) migrate from North America to their winter habitat in Mexico. A well conserved and protected high-altitude pine and fir forest in Mexico is essential for the survival of the overwintering of monarchs, which has been recognized as an endangered biological phenomenon.

Listed as Critically Endangered on the IUCN Red List (2009), the Javan rhino (Rhinoceros sondaicus) is considered to be one of the most endangered large mammals in the world with only two populations existing in the wild, for a total number of less than 60 animals.

The giant panda is a medium-sized black-and-white bear that lives only in the mountainous temperate forests of southwest China. Giant pandas eat a diet of bamboo. The giant panda is one of the most endangered animals on Earth. Only about 1,600 of these rare bears are left. This number includes more than 160 pandas living in zoos and breeding centers around the world, mostly in China.

1. Bois Dentelle2.  Dragon Tree3. African Baobab Tree4. Clanwilliam Cedar5. Honduras Rosewood6. Monkey Puzzle7. African Blackwood 8. St. Helena Gumwood9. Hinton’s Oak (Encino of Hinton)10. Loulu

The Bois Dentelle is a truly beautiful tree; sadly there are only two of these trees in existence today (both in Mauritius). This tree is not huge like others on this list; instead, the Bois Dentelle is pretty small, but the flowers that it provides are one of a kind.

Dragon Tree is considered endangered. However, Brava and Santiago, two places in Cape Verde, consider the tree to be extinct. Due to animals that eat the seedlings of the tree, such as goats, rats, and rabbits, it’s extremely hard for the tree to regenerate. Fires have also been a problem for these trees.

The Baobab tree is on the endangered list for many reasons. For one, droughts within the tree’s habitat have caused them to not have enough water to grow properly. Also, these trees are often cut down so that people can use the trunks to store water in, which can hold about 2376 gallons of water. The fruit is also used for making porridge as well as the leaves, which can be used to make a salad.

Like many other trees on this list, the Clanwilliam cedar is on the endangered list of trees because of the wide need for its timber. The timber that the tree provides is often used for building because it is rot-resistant, as well as for telegraph poles and even for furniture.

The timber made from the Honduras rosewood is highly valuable. A lot of this wood is used to create musical instruments such as guitars and various other stringed instruments. It is most used to create claves and xylophones due to the fact that the timber is said to be heavy and very durable which allows it to provide a very loud but clear note.

Because of things such as logging, grazing, and fires, the forests once made up of Monkey Trees are slowly diminishing. The timber is often used for building bridges, roofs, boat structures, furniture, and plenty of other things, but this is mostly due to the fact that it is resistant to fungal decay and also has a lot of mechanical resistance.

The extremely dark heartwood of the Blackwood is definitely one of the most widely sought after timbers in the entire world. Some of the highest class instruments, mostly woodwinds, are made of this wood. It is also used to make furniture as well as for carving purposes.

When it comes to the St. Helena gumwood tree, the main problem is humans. Many people who have access to these trees often cut them down and use them for building as well as for firewood. This has probably happened since the beginning of 1659 when the island was first settled. Also, some type of animal often accompanies settlers.

Due to the growing need of agricultural locations in Mexico, the Hinton’s Oak is declining in numbers. Road construction, more planting fields, and coffee plantations have all taken over the land that was once inhabited by the Hinton’s Oak.

The Loulu tree has been living on the Hawaii Islands for around 40,000 years. The Polynesians who used it for making spears and thatching first brought it there. The trees flourished until the ancient Hawaiians arrived, bringing pigs and other animals with them that either ate the seeds or ruined the roots of young trees.

Put law on hunting animals Provide safe habitats for animals reduce the amount of Global Warming - Recover and protect (at least) important areas

(and respective habitat) in the living cycle of that specie

Protect essential elements of the system (key species) and not only the species isolately.