1. absorb

2. bud

3. chlorophyll

4. leaf

5. desert

6. energy

7. experiment

8. fertile

9. flower

10. habitat

11. hypothesis

12. matter

13. minerals

14. nutrient

15. observe

16. prove

17. pond

18. root

19. seed

20. stem

21. sun

22. vitamins

23. water

24. wind

25. continent

26. globe

27. hill

28. island

29. lake

30. map

31. model

32. Mountain

33. ocean

34. peninsula

35. people

36. plain

37. river

38. Social Studies

39. Valley