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Living World (Year 10 exam condensed edition) - Coggle Diagram
Living World (Year 10 exam condensed edition)
Rainforests
Deforestation Impacts
Environmental
Loss of habitats- causing species to reduce in population / become extinct if unable to adapt
Less carbon capture- carbon dioxide released into the atmosphere (increasing emissions) and less trees to absorb carbon emissions leading to less mitigation of emissions
High amounts of soil erosion for water washing away nutrient rich topsoil since there is no tree cover to intercept.
Economic
Business able to have more space to exploit (for cattle ranching and/or agriculture) - beef sales made >$600mn by exports from the Amazon.
Local communities can make money from selling rainforest?
Social
Local tribal communities forced to relocate or produce local scale farms to survive
Deserts
Desertification
Causes
Global warming dries soil so that it becomes dust like / less rainfall in desert areas
Soil erosion causes it to lose nutrients and become infertile
Over-grazing causes soil to become infertile
Management strategies
The Great Green belt- planting savanna suited trees to reintegrate wildlife on the verges of deserts / also act as windbreaks to mitigate soil erosion
Drip irrigation- manages water supplies so crops can grow in savanna areas and water is not wasted.
Solar technology uses the sunlight to power areas around deserts helping inhabitants have a good QOL.
Ecosysystems
Definitions
Ecosystem- the biotic (community) and abiotic factors which collaborate and work within a certain area
Community- All the biotic factors within an ecosystem
Species- a single animal or plant type within an ecosystem
Interdependence- The idea of species being closely linked with another, relying on each other for survival e.g predator, prey
Producers
Make their own food via photosynthesis
The start of a food chain where the highest amount of energy and biomass is.
As
Consumers
Eat other plant or animals to gain energy as food
Can be predators or prey
generally have to eat multiple organisms to gain enough energy to survive (since energy is lost through bodily processes)
Decomposers- organisms which secrete enzymes to decay dead organic matter, so that nutrients can be replenished in the soil and uptaken by plants.
Food chain/webs- show the transfer of energy between organisms (which organism eat the other)