Answer on Questions. Q1. A (i read it on Wikipedia) Q2. B (Most of endangered species are plants and animals) Q3. D (Coral reefs are mostly affected by water pollution, Tropical Rainforests are famed for their high quality wood (illegal logging)) Q4. B (We all know about Carbon Dioxide and Monoxide, right?) Q5. A (I read it on Encyclopædia Britannica) Q6. D (Watched about light pollution in National Geographic)