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nearly three-quarters of all the varieties of life on Earth live in rainforestĬ. rainforests cover about six per cent of the Earth’s land surfaceī. Rainforest, the Complicated EnvironmentĪ. (taken from SOSE: Studies of society and environment, 2000)Ī. It creates equilibrium in our environment and its resources are significant for human beings survival. To sum up, the role of the rainforests is essential for human life. Eventually, as this gas builds up the atmosphere, leading to what scientists call the enhanced greenhouse effect. As rainforests are cut down and burned, carbon dioxide is released into the Earth’s atmosphere. Nearly 40 per cent of the world’s carbo is contained in the trees of the rainforests.
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In fact, scientsists believe that nearly 50 per cent of the Earth’s oxygen is produced by rainforests in the Amazon region alone. Rainforests are major producers of the Earth’s oxygen. This is why our global rainforests are often called the Earth’s “lungs’. Rainforests are able to remove carbon dioxide from the air and return oxygen in its place.
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Carbon dioxide (CO2) is the gas put into the air globally by humans, mainly by the burning of fossil fuels (for example in cars and factories). Rainforests are vital to the Earth in helping to recyle carbon and oxygen. This helps to control soil erosion and flooding. By doing this, they are able to slow down water run-off by gradually releasing the water over time into streams and rivers. Rainforests are als able to absorb over 90 per cent of the rainfall in their leaves and mosses. This process could convert rainforests into a sparse grassland or desert. Eventually, the area’s climate will get hotter and drier. If larege areas of these lush rainforests are cleared, he average rainfall in the area will drop. For example, between 50 and 80 per cent of the moisture in the air above rainforests comes from the rainforest’s treees. Rainforests influence both our local and global climates. Unfortunately, the widespread destruction of many of the world’s rainforests has caused a significant decline in the number of plant and animal species on Earth. Scientists estimate that between 60 and 90 per cent of all species of life are to be found in rain forests. They provide habitats for more species of plants, animals, insects and birds than any other environment found on our planet. Rainforests are the oldest major ecosystem, having survived climate changes for more than one million years. This is remarkable because rainforests cover only about six per cent of the Earth’s land surface. They are recognized worldwide as containing the richest source of plants and animals and are believed to contain nearly three-quarters of all the varieties of life on Earth. Rainforests are one of the most complicated environments on Earth.