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Forest: Our Lifeline

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{T}oxic TuRbO*

on 5 January 2014

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Transcript of Forest: Our Lifeline

A Prezi made by Sanat JayKay
Forest: Our Lifeline
Forests: Layers
Forests help in purifying air. Lets see how.... ==================>
Purifying air
Forests play an essential role in purifying the air we breathe. Of course, trees don't have lungs the way human beings do. They "breathe," or respire, thanks to a process called photosynthesis.
Of plants and animals
There is a certain interdependence between plants and animals. Plants need the air we breath out, and people need the air that plants ommit into the air. Because of this cycle of air, to and from animals to plant, there needs to be a balance between them. During the last 40 or so years there has been a movement toward more and more plants being planted, that is why we celebrate earth day every
Here is a picture on the food web =>
Food web (Food chain)
Forests play a major role in our life. As we have studied earlier, forests help in giving us shade, and much more... Now we shall learn some more uses of Forests. ==========>
Forests: Uses
* Forests prevent soil erosion and floods.(Soil erosion: Trees bind their roots firmly into soil. Floods: Trees break the force of rain so that water falls gently to the ground.)
* Some trees like coconut and palm act as windbreakers against storms.
* Forests give us latex (Makes rubber), bamboo (Animal Fodder), and cane (used for producing picture frames, walking sticks, baskets, etc;)
Food Chain
Forests can be divided into three layers: canopy (Top), Crown (Middle), and understorey (Bottom)
Forests are homes to many plants, animals, insects, etc; These organisms come together and form a community known as the
biotic community
Thanks to reference.com for the info
Thanks to wikipedia.org
for the picture
A food chain/web is a linear sequence of links in a food web starting from a species that are called producers in the web and ends at a species that is called decomposers species in the web. A food chain differs from a food web, because the complex network of feeding relations are formed into a group of trophic species and the chain only follows linear monophagous pathways.
Thanks to wikipedia.org for the info
So, what is photosynthesis? All leaves and plants contain living cells that take in sunlight. By capturing the sun's energy, the leaf's cells gain the strength to decompose the sap supplied by the roots, thus providing the tree with nutrition. Not only does the leaf need light to decompose sap and transform it into food for the tree, it also needs air. Air is filtered by the tree and returned to the atmosphere. That is why we say that trees purify the air. As we know, air, water, and soil are the elements essential to all life on the planet. For trees, nutrition comes from the soil and is transported by water from the roots to the leaves. The leaves capture sunlight and air to transform the sap into sugar that will then be used to feed all of the tree's living cells. As part of this process, some of the air is filtered and returned to the atmosphere.
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