Tropical rainforests are found in areas with high temperatures between 20-30 degrees Celsius and high rainfall between 1000-2000 mm annually. They have 3 main layers - the emergent layer with the tallest trees up to 50m high and buttress roots, the canopy layer 15-30m tall that blocks 70% of sunlight, and the undergrowth layer that receives very little sunlight. Rainforests are threatened by deforestation for agriculture, logging and development which causes extinction of plants and animals. Singapore had rainforests but they were cleared for population and industry growth, though reserves like Bukit Timah Nature preserve remnants for water catchment, recreation and heritage.

1. Tropical Rainforests Workbook pg. 105 & 106

2. Where is tropical?

8. Emergent

10. What can you tell about the roots?

11. Buttress root

12. Buttress root

13. Buttress root

16. Canopy

17. Canopy

19. Undergrowth

20. Undergrowth

21. Undergrowth

22. Layers of a tropical rainforests

24. Drip tip / broad leaves

25. Evergreen

34. Rainforests in Singapore

35. Bukit Timah Nature Reserve

36. Bukit Timah Rainforest

37. Sungei Buloh Wetland Reserve