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GEOGRAPHY - Coggle Diagram
GEOGRAPHY
Water Shortage
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Condensation💦
Water vapour rises into the atmosphere and cools, becoming water droplets
Precipitation🌧
When more and more of these water droplets come together to from clouds, they become too heavy and falls back to the earth's surface. This includes all forms of water such as rain and snow.
Infiltration
Some of the water that falls to the ground seeps into the soil. The water that is stored in the soil is called groundwater.
Surface Runoff
The rest of the water that does not seep into the soil flows over earth's surface, down hills and mountains into rivers, lakes and eventually seas.
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Economic Uses
Industrial(22%)
Water is used to manufacture, maintain and cool generators
Agriculture(70%)
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Refers to the growing of crops for human use, mainly for food
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Impacts
Domestic
Increased difficulty in collecting water
-Women in Africa have to walk up to 6 kilometres just to collect water at a well, and the water might be dirty, causing water-borne diseases like cholera
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Tropical Rainforests
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Deforestation
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Why?
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Logging
Cutting down of trees for timber. For every one tree that is cut down, five are badly damaged.
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Cattle ranching🐄
Involves operating large farms to raise cattle. Large areas of rainforests are cleared to create land for cattle to graze.
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Adaptations
Barks and Branches
Most trees have tall and straight trunks with branches that spread out near the top of the tree. This allows the trees to absorb as much sunlight as possible with the increased surface area exposed.
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Leaves🌿
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Leaves have waxy, leathery or hairy surfaces to minimise the loss of moisture through transpiration due to the high temperatures in the tropical rainforests.
Some leaves have pointy tips called drip tips to allow water to flow off the surface of the leaves easily to prevent fungi and bacteria from growing on the leaves.
Fruits and Flowers💐
As the air is usually still in the rainforest, the lack of wind make seed dispersal hard to occur. Thus, flowers have colourful and strong-smelling flowers to attract insects for seed dispersal.
Roots
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Most of the roots are shallow as the nutrients are found mostly at the top of the soil due to the rapid decomposition of leaves as the temperatures of the rainforests are high.
Impacts of deforestation
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Increased risk of flooding, soil erosion and sendimentation
Risk of flooding
Soil in the forests absorbs rainwater and releases it slowly into the rivers. When rain falls, the forests intercept the rain thus, allowing the rainwater to seep into the ground. When trees are cleared, the ground is left bare, increasing surface runoff, thus flooding areas.
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Soil Erosion
Tree roots hold the soil together ad keeps the ground stable. On top of that, rain is intercepted by the three layers of the rainforest before hitting the ground. When trees are removed, the land becomes exposed, causing the water to wash the soil away when it rains.
Refers to the removal of the top layers of the soil by rainwater, wind and desuctive human activities.
Sedimentation
When eroded soil is washed into the rivers, it increases the amount of sendiments in the water, causing the water quality to lower. This affects the aquatic life in the rivers. It also smothers fish eggs, lowering hatch rates and turns the water cloudy, preventing sunlight from penetrating the water, affecting the coral reefs which require sunlight to grow.
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