Rainforests are dense forests found near the equator that receive a high amount of rainfall each year. They exist in layers from an emergent layer of tall trees reaching 70-80 meters to a forest floor layer of shorter plants 3-5 meters high. The two main types are tropical rainforests near the equator and temperate rainforests at higher latitudes. Tropical rainforests have warm, moist climates and contain a majority of the world's plant and animal species. Famous rainforests include the Amazon, Daintree in Australia, and Atsinanana in Madagascar, all of which are threatened by deforestation.

1. RAINFORESTS
AROUND THE WORLD
By
Charitha P.
Roll : 41
Sec : B6

2. What are Rainforests?
 Rainforests are the Earth's oldest living ecosystems.
 They’re also known as the evergreen trees.
 A Rainforest can be described as a tall, dense jungle.
 Rainforests make up six percent of the earth's land surface, but produce 40
percent of its oxygen.

3. Why ‘Rain’ forests?
 The reason it is called a "rain" forest is because of the high amount of rainfall
it gets per year.
 The rain forest is nearly self-watering.
 The trees in the rainforest transpire heavily.
 The moisture helps create the thick cloud cover that hangs over most rain
forests.

4. Layers
 Emergent layer (70-80 m)
 Canopy layer (40-60 m)
 Under-storey layer (10-15 m)
 Forest layer (3-5 m)

5. Types of Rainforests
 There are two types of rainforests, the Tropical and the Temperate
Rainforests.
 Tropical and temperate rainforests share certain characteristics.
 Both types of rainforests are rich in plant and animal species, though the
diversity is greater in tropical rainforests.

6. Tropical Rainforests
 Tropical rainforests lie in between the Tropic of Cancer and the Tropic of
Capricorn which is known as the tropical region
 Tropical rainforests are warm and moist.
 The temperature here is perfectly suitable for all types of plants to grow.
 The most commonly found plants here are orchids.

7. Temperate Rainforests
 They lie in the temperate region just above and below the tropic zone.
 The Temperate rainforests are cool, though humid.
 Due to a cool temperature hardwoods trees grow in this region.
 Trees like pine, and fir, mahogany, ferns and mosses are also found here.

8. Other Rainforests
 Montane rainforests
 Flooded Rainforests
 Mangrove Rainforests
 Lowland Rainforests

9. Climatic Conditions
 The climate of a rain forest is very hot and humid.
 For a rainforest to exist, there must be a warm climate, which explains why a vast
majority of rainforest regions are situated on or near the equator.
 The average temperature of the tropical rainforest remains between 30 to
35°C and that of a temperate rainforest is about 20-25°C

10. Where are the rainforests found?
 Rainforests are mostly found near the equator, also some of them are found
in the temperate zone.

11. Plant Species
 An estimated two-thirds of the world's plant species grow in the rain forest.
 The hot, humid climate in the world’s tropical regions provide ideal
conditions for plant life.
 The plants in the rainforests includes flowers with special adaptations and
trees with unusual root structures.

12. Medicinal products
 Tropical rainforests have been called the “World’s largest pharmacy”
 There are a number of potentially useful medicinal plants growing in the
rainforests.
 The National Cancer Institute (NCI) states that 70% of the anti-cancer plants
identified so far are rain forest plants.

13. Animal Life
 30 million species of plants and animals live in “tropical” rainforests.
 Insects make up the majority of living creatures in the tropical rainforests.
 Anteaters, Giant armadillos and jaguars are the most found animals in any of
the rainforests.

14. Famous Rainforests
 Amazon Rainforest – Brazil
 Daintree Rainforest – Australia
 Rainforests of the Atsinanana – Madagascar
 The Mount Kinabalu National Park – Malaysia
 Cloud Forest – Ecuador

15. Amazon Rainforest
 The Amazon Rainforest is the biggest and most famous rainforest in the
world.
 The Amazon rainforest covers much of the Amazon Basin. This is the area
that drains into the Amazon River.
 It is home to one fifth of the world’s bird species, and one third of the world’s
plant species.

16. Daintree Rainforest
 Australia’s Daintree Rainforest is a tropical rainforest located in Queensland.
 Daintree Rainforest is thought to be around 135 million years old, making it
older than the Amazon Rainforest.
 It provides a home to many of Australia’s native species.
 The Daintree Rainforest is known for its awesome tropical flavors and
specialty foods.

17. Atsinanana Rainforest
 Atsinanana rainforest is in Madagascar.
 It is well known for the diversity of animal species.
 Many of Madagascar’s endemic species are found in the Madagascan Lowland
Forests.
 This island has Black lemurs that are unique to the island.

18. Deforestation
 At the current rate of depletion, it is estimated that 5–10 percent of tropical
rainforest species will be lost per decade.
 Rain forests are under threat largely due to slash-and-burn agriculture and
timber logging.
 It’s long term consequence would be ‘Drought’.

20. THANK YOU