wilderness act
Civil Rights and the War on Poverty.
Great Society
Lyndon Johnson's Great Society programs result in the largest expansion of the federal bureaucracy since FDR's New Deal
it destroy the society. its make dages over the society, by seeing these vandals other poeple will do the same like this the society will spoil. vandalizing in the society also reflect on person's behaiveour so it could change the person from good to bad and from bad to very bad.
That depends on which component you remove and how complex the ecosystem is, if for example you were to remove all the mosquitoes from just about any ecosystem, the system would simply adapt and continue on because the mosquito's only function in nature is to spread disease, and annoy the hell out of larger creatures.