Answer these questions briefly. 1. List the advantages of biodiesel. 2. Why are governments all over the world stepping up the research in biodiesel? 3. Name some countries which are using biodiesel. Also, talk about their usage of biodiesel. 4. What could be the source of biodiesel in India, and how can it be produced? Find the words from the passage which are similar in meaning to these. 1. to make somebody do something by giving them good reasons for doing it 2. a continuous decrease in the number, value, quality, etc., of something 3. harmful 4. very dry​