They'll become extinct, and will never come back! :(
Endangered species is when there is a certain type of animal that is losing its population. Extinction is a very old animal that has died out and there is none of them left, e.g dinosaurs.
There would be too many bugs and grubs around.
Florida manatees almost became extinct or died out completely
Giant kangaroos were never endangered. The concept of a species being listed as "endangered" was introduced in the twentieth century. Giant kangaroos died out thousands of years ago, along with many other species of Australian megafauna.
species come endangered because their habitat is rather being destoryed or polluted. species come extinct because they died because moreand more polluted water or stuff is being destoryed.
If all currently endangered species were to die, there would still be food chains in the world. The real concern about endangered species is not that the entire ecosystem will collapse without them, it is just that once they are gone you can't really get them back (not counting future advances in genetic engineering which may make it possible to get them back, but which we can hardly count on) and as a result, all future generations of humanity will be deprived of those species, for whatever value they may have.
Fish would die. There are species of fish that live off the algae.
It would either adapt to another habitat or become extinct.
they are different because extinct is when a species is completely died out and endangered is when a species is reduced and may die out. they alike because they both deal with killing the species.
Threatened species means that the population is less than it usually was, and endangered means that there are very few left. Endangered means that the population is low and threatened means that the population is almost died out. YAY!!!!!!
Threatened means that the animal is vulnerable to extinction and the population of the animal is declining. (ex: Certain species of whale population are being threatened.) Endangered means that the animal will soon be extinct if nothing is done about it. Some endangered animals are being bred in captivity until their numbers increase enough to be released back in the wild. (ex: Bald Eagles are an endangered species of bird. Pandas are an endangered species of bear.) Extinct means that the animal has completely died out and there aren't any left of this species. (ex: Dinosaurs are an extinct species of reptile. Dodo is an extinct bird.) Here's a visual: Threatened-------------> Endangered---------------> Extinct
they would die or move to another place