Answer: Environmental ethics deals with the ethical problems surrounding environmental protection like deforestation, climate change, ocean acidification etc. It aims to provide ethical justification and moral motivation for the cause of global environmental protection.  

Ethical Principles to guide Public Policy Decision on Environmental Issues

• Prevention of Harm: While making policy decisions, always try and avoid harm to the environment and wildlife. 
• For instance, the banning of DDT in India worked to protect bird populations.
• Precautionary Approach: The precautionary principle requires that, if there is a strong suspicion that a certain activity may have environmentally harmful consequences, it is better to control that activity now rather than to wait for incontrovertible scientific evidence. 
• For example, This principle was evident when projects near the Western Ghats were halted due to potential ecological damage.
• Sustainable Development: It is an approach to economic planning that attempts to foster economic growth while preserving the quality of the environment for future generations. 
• For example, India's promotion of solar energy to balance growth with environmental protection is a perfect example.
• Equity and Justice: Equity is achieving fairness and balance in access to environmental resources, whereas justice states that everyone should have a say in how the environment is managed and protects their communities.
• For example, The recognition of tribal rights in forest conservation through the Forest Rights Act in India is a testament to this.
• Solidarity: Solidarity promotes the common goal-oriented effort by individuals who are conscious of their common interests and shared environmental responsibility. 
• For example, The Chipko movement in India, where villagers united to prevent deforestation and save Himalayan trees, demonstrates this effectively.
• Scientific Knowledge and Integrity in Decision-making: Respecting scientific information for decision-making and following it without compromise is crucial. 
• For example, This can be seen in decisions like preserving mangroves based on studies that highlight their importance in coastal protection.

These principles could be incorporated into decision making by adopting following measures:

• Identifying Stakeholders: Citizens, regions and sectors of economy which are most likely to be impacted by environmental degradation must be shortlisted and accordingly environmentally friendly policies must be formulated.

• Capacity Building: To consider environmental ethics into policy making, skills are needed. These skills could be inducted by conducting proper training and adopting capacity building measures. 

• Promoting Citizen’s Participation: Any governmental policy would not reap result without citizen’s participation. Thus, citizen participation in terms of policy input, implementation and feedback must be promoted.

• Focusing on Environment Centric Laws: The overall government policy must be environment centric.

• For instance, while manufacturing a car, the focus must be on promoting electric vehicles instead of conventional vehicles.

Environmental ethics induces ecological consciousness in decision-making. It provides moral grounds for social policies aimed at protecting the earth’s environment and remedying environmental degradation. Thus, it must be promoted in modern-day governance.