Hello Gulzr!

Before answering your question, a kind request. Please do post your question separately, not in the answer section of other questions . I got to know which words you are talking about in some comment of other question. So please do make a note of it.

1. Sustainable - The world is now moving towards sustainable development!
2. Habitat - Every creature in its own habitat tries to dominate others.
3. Vital - It is a vital decision took by the authority to protect its students from bullying.
4. Component - One of the key component that contributes to global warming is emission of gases from vehicles.