Ks3 bio: Change in physical environmental factors
Competition from other organisms
Disease
Human activities (hunting, clearing habitats, using poison)

Question

Change in physical environmental factors 
Competition from other organisms 
Disease
Human activities (hunting, clearing habitats, using poison)

Exciteful Macaw · Accepted Answer

Changes in an ecosystem can cause species to become endangered or extinct this is usually due to

Change in physical environmental factors Competition from other organisms Disease Human activities (hunting, clearing habitats, using poison)