Geography Revision

What are rainforests like?
1. The rainforest has more species of plants and animals then any other biome.
2. Rainforests cover 6 percent of the Earth's surface this number is going down though because of deforestation.
3. The Rainforests get around 2,000 mm of rain per year and the temperatures range from 27-32.
4. You can find TRF (Tropical Rainforests) between the tropics of Cancer and Capricon.
5. As the Rainforest is warm and wet all round year this makes it a good place for growth.
Layers of the Rainforest
1. Bottom Layer (Forest Floor): Very little reaches the forest floor so the plants grow very slowly. But when a tree collapses it lets in the light so all the plants fight for the light so that they can grow. Hear are the animals which live here:Jaguars, leopards, tigers, elephants, gorillas and lots of insects.
2. Understory: this layer stills gets a little a bit of light so the plants have adapted to have not much light to grow and photosynthesise these. Animals live here:Birds, butterflies, frogs, snakes and lots of insects live here.
3. Canopy this is the second highest layer their height is around 30-45 metres high. The canopy layer blocks out light and catches rainwater for the bottom layer and the understory layer. The Animals which live here are: Birds, monkeys, frogs, sloths, lizards, snakes and many insects live here some of these animals never go to the forest floor.
4. Emergents layer this is the top layer the height of this layer ranges from around 40 metres and above. This layer though only has a couple of trees this high. They have small, waxy leaves to prevent themselves from drying out. The animals which live here are:Eagles, butterflies, small monkeys and bats all live here.
Deforestation
1. What are the causes of Deforestation?
  1. The causes of deforestation are that people want money, land, farms, buildings,roads, room for cattle ranching, ingrediants from the tree which are high priced for example furnitures and homes and harvesting timber for paper .
2. What are the impacts of Deforestation?
  1. The impacts to Deforestation is that you are emiting of more CO2 because their isn't enough trees to take in the CO2.
  2. Also when you cut down the trees you are also killing animals and their habitats because some of them live in the trees so when the trees fall you are killing them because they might get squashed.
  3. If we keep cutting down trees then in the future people might start to die from not having enough oxygen because we have cut down to many trees down and their is to much CO2.
Sustainable developing
1. Selective Logging: Only the oldest trees are cut down, meaning most trees are still left standing. This is less damaging as the overall forest structure is kept which means the rainforest will be able to regenarate.
2. Replanting: New trees are planted to replace the ones that are cut down this means there will be trees for people to use in the future.
3. Education: Some local people are unaware of the damage of deforestation can do. Educating these people about the impact of deforestation and the ways to reduce the impacts, decreasing their effect on the environment.
4. Reducing demand for hardwood: there is a high demand for hardwood eg mahogany from consumers in rich countries which means that some tropical hardwoods are becoming rare, some rich countries are trying to reduce the demand by taxing imported hardwood or banning it.
Climate Graph ----->
1. A climate graph tells us what the climate is like in an area. The graph above tells us that the yellow rectangles are the heat and the blue dotted lines are how much rain water you get in this area every year.

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	Creado por Matthew Fox hace alrededor de 7 años