What can cause Extinction?

The demand for certain resources. Soy oil is a prime example as it is used in a lot of things. The main problem is that most of it comes from deforestation the rain forest. We have a growing population which in turn causes more demand. Which means more deforestation. Which means more spices gets endangered. The other reason is Climate Change. The climate changing can destroy certain habitats which in turn can cause mass extinction or mass migration.