Or one animal might have been destroyed by another that was stronger or faster. When we talk about extinct animals, many people still think of dinosaurs or dodos. Many frog species are thought to have become extinct because of this fungus. First of all, animal extinction is due to habitat loss. The main cause of the dodo’s extinction, however, was the animals the sailors brought with them, such as cats, pigs and rats – they guzzled on dodo eggs and out-competed the birds for food, wiping them out by the 1680s. In the worst case, epidemics can cause whole species to become extinct if the animals only occur in one region and thus can be all affected by the deadly threat. The effect that climate has on extinction is very big. It is the cause of extinction of almost two-thirds of the 110 Harlequin frog species that are known. How can overhunting cause a species to become endangered? In the distant past, several species of animals became extinct through natural causes. Human Activities 1. Cool extinct animals, such as weird birds, frogs, and mammals, have continuously joined the list. If this keeps happening the species will become endangered than extinct Animals that may become extinct in the next 10 years. Agriculture – Because of the drive for more food production, there has been a significant impact on approximately 75% of the Earth’s land and 66% of the oceans. There are five major causes of extinction: habitat loss, an introduced species, pollution, population growth, and overconsumption. There might have been a change in the climate of a particular region, and the plants or animals on which the species lived could have died out because of the change in the weather. (* The year of extinction) Great Auk Rocky islands off the North Atlantic coast (1844) Animals and plants become extinct for a number of reasons. Perhaps, animals that are extinct will be cloned and returned to the wild one day! If too many adult animals are killed there will be less babies. See pictures of the amazing creatures we have lost due to recent extinctions, from the dodo to the rhino. Climatic Heating and Cooling. Others survive and continue to evolve. The biodiverse Earth can't keep up with the rapid changes in temperature and climate. Thus, the causes of animal extinction are habitat destruction, illegal hunting from human to the animal and introduction of exotic species. Through the activity, students will create a list of reasons why animals can become extinct. Loss of Habitat A loss of habitat can happen naturally. Extinction has a role in evolution as some species disappear. 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. Natural Causes of Extinction. So what are the main causes of extinction of plants and animals? The animals that have not adapted to their environment may become extinct. 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