The document discusses environmental impact assessments (EIAs), which are formal processes used to predict and address potential environmental consequences of development projects. EIAs ensure issues are identified early in planning. The objectives of an EIA are to predict impacts, find ways to reduce adverse effects, design projects for the local environment, and present options to decision-makers. EIAs go through phases and allow preventative measures and environmental management plans to be developed. They also facilitate cost-benefit analyses of projects and provide a rational approach to sustainable development.