Editing Extinction event (section)

====Other hypotheses====
[[File:Terra Indígena Porquinhos, Maranhão (25758143568).jpg|thumb|Many species of plants and animals are at high risk of extinction due to the [[Deforestation of the Amazon rainforest|destruction]] of the [[Amazon rainforest]]]]
Many other hypotheses have been proposed, such as the spread of a new disease, or simple out-competition following an especially successful biological innovation. But all have been rejected, usually for one of the following reasons: they require events or processes for which there is no evidence; they assume mechanisms that are contrary to the available evidence; they are based on other theories that have been rejected or superseded.