YES..NGO's are useful in da society because....
 For instance few NGO's are concerned with poverty which helps the needy people with the equipment ,skills required to find food and clean drinking water whereas few helps through investigation and documentation of human rights violation and provides legal assistance to the victims.Others provide specialized technical products and services to support development activities organized by other organizations.etc
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NGO's are voluntary social work organisation who renders help to government and society for improvement and quality of life people and also animals from education to health to environment and to property alleviation, the scope of NGO's operational areas touches every part of life.