1. It’s a challenge! - 2. Our changing planet » Стр.14 (2)

Read the article again and choose the best heading for each paragraph. 1–C; 2–D; 3–B; 4–A. 1 – C. The age of the planet. 2 – D. How the planet changes. 3 – B. Problems for the planet. 4 – A. Good news in one part of the world.