Ecological balance is maintained naturally through the prey-predator relationships existing in the nature. Nature keeps control on each and every destructive activity.
Man and his environment :- In initial days, man started using natural resources like water, wood, fruits and so on. He improved his life standards through successive inventions. For the betterness of mankind, he disturbed eco-balance. Eco-balance is disturbed as below-
1) De-forestation:- Animals and bird species starts vanishing. Temperature rise occurs. Food production becomes less.
2) Excessive industrialization:- Air, water, noise and ground pollution problems increased.
3) Spraying of chemical fertilizers in the fields:- It increases air pollution and ground pollution problems.
4) More land acquisition for building constructions:- It reduces the area requirements of other ecosystems
For maintaining eco balance all above things should be in controlled manner.
terns of rainfall, insects and pathogens, and history of human influence.