List the anthropogenic activities which affect ecosystem. 

Explanation

Human being and their activities make the destruction of ecosystem. We all exploit the nature than that of our needs. The ecosystem is exploited in order to meet rapidly growing demands for food, fresh water, medicine, timber, fiber and fuel. The deterioration, caused by present day human activities changed the ecosystem rapidly and extensively than in any comparable period of time in human history.
The followings are factors caused by human activities which disturb an ecosystem.
(i) The destruction of habitats.
(ii) Deforestation and over grazing.
(iii) Erosion of soils.
(iv) Introduction of alien species.
(v) Over harvesting of plant material,
(vi) Pollution of land, water and air.
(vii) Run off pesticides, fertilizers and animals waste.