1. Conservation: preservation, protection, or restoration of the natural environment and of wildlife. (பாதுகாத்தல்)
2. Contamination: the action or state of making or being made impure by polluting or poisoning. (அசுத்தம் கலப்பது)
3. Deforestation: the action of clearing a wide area of trees. (காடு அழித்தல்)
4. Disposable: (of an article) intended to be thrown away after use. (தள்ளிக் கழிக்கக்கூடிய)
5. Ecosystem: a biological community of interacting organisms and their physical environment. ( சூழல்மண்டலம்)
6. Emission: the production and discharge of something, especially gas or radiation. (வாயு, கதிரியக்க வெளியேற்றம்)
7. Endangered: (of a species) seriously at risk of extinction. (அழிவின் விளிம்பில் இருக்கக்கூடிய)
8. Fossil fuel: a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms. (இயற்கை எரிபொருள்)
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