Is glaciation one of the causes of extinction.

Asteroids is not one of the nature causes of extinction

Increase level of greenhouse gasses is one of the reasons of modern extinction.

Uncontrolled hybridization replacement of local genotypes as a result of introduced plant is not caused by genetic

Pollution, global warming, acid rain and toxicity is a factor that causes extinction.

Prevent wildlife trade is a government action.

Extinction occurs when the environment of species changes faster than the species can adapt.

There are four causes of extinction

Human fragment is a natural cause