classify the following pollutants into natural and manmade categories. sewage ,dust ,pollen grains , chemical fertilizer, vehicular smoke ,algae ,pesticides, waste of animals and birds.

classify the following pollutants into natural and manmade categories.

1.	classify the following pollutants into natural and manmade categories. sewage ,dust ,pollen grains , chemical fertilizer, vehicular smoke ,algae ,pesticides, waste of animals and birds.
Answer» MAN made- sewage, chemical fertiliser, VEHICULAR smoke, pesticidesnatural- dust, POLLEN, grains, ALGAE, waste of animals and birds