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I'll help you with each question. Here are the answers: 3. A. diversity 13. C. private 14. A. outer space 15. A. to review 16. A. explain 17. A. taking 18. B. Global warming 19. B. Climate change 20. A. habitat loss 21. B. saw 22. A. whose 23. C. follow 24. C. should revise 25. C. landforms 26. A. since 27. A. knew 28. A. so 29. A. such 30. D. easy 31. A. what is 32. C. if I had gone 33. A. that 34. A. which 35. A. who 36. A. whose 37. D. laughing 38. A. which 39. C. which 40. C. which 41. D. Climate change 42. B. habitat 43. A. bodies 44. C. chain 45. B. flora 46. South