Vocabulary & Comprehension

1. What is "Earth Hour," and what do people do to celebrate it?

2. What does the term biodiversity refer to?

3. According to the lesson, what will happen if we continue to deplete the Earth's natural resources?

4. What is a monetary system? What system was used before it?

5. The lesson mentions melting glaciers will cause sea levels to rise. What is this process called?

Grammar: Conditional Sentences ('If' Clauses)

6. Type 1: Complete the sentence: If we waste water, we ______ (not have) enough to drink in the future.

7. Type 2: Complete the sentence: If I had a million rupees, I ______ (help) the poor.

8. Type 3: Complete the sentence: If he had checked the bag, he ______ (see) the mistake. 9. What is the main difference between an 'If' Type 1 and Type 2 sentence?

10. Identify the type of conditional: "If Savindu were the captain, everyone would know him."

Grammar: Future Perfect Tense

11. Complete with the Future Perfect tense: By the year 2030, astronauts ______ (land) on Mars.

12. Make this sentence negative: "I will have finished my project by tomorrow."

13. Form a question using the Future Perfect tense: (you / complete / your education) by 2025?

14. What is the structure of the Future Perfect tense?

15. Write a sentence about something you will have achieved by the end of this year.