A work by : Miguel Aguilar Janita Daniel Barrena González Manuel Pérez Cabezas

Deforestation Deforestation is the removal of forest, normally due to human activities. Around 13 million of hectares of trees disappear every year (the size of Costa Rica). massive destruction of the rainforests Another problem is the massive destruction of the rainforests of the world, where, the 70% of all organism, 90% of our relatives, the primates, live in them.

Are Are: we use wood for building materials, furniture, and other paper products. Forest are also cleared to urban areas, including roads, to grow crops and to create new grazing land. main consequences Its main consequences: Erosion of soil 1- Erosion of soil: when there is rainfall, the water washes away the rest of nutrients. Loss of biodiversity 2- Loss of biodiversity. Climate Change 3- Climate Change: the forest absorb and store great amounts of water when there are heavy rains. But when forest are cut down, there are altering periods of flood and then drought in the affected area.

EROSION OF SOIL CLIMATE CHANGE

TROPICAL RAINFORESTS OVEREXPLOITATION OF ANIMAL SPECIES

Use different agricultural practices Use different agricultural practices, so forests are not cut to free space up for crops. Eliminate logging in the rainforest Eliminate logging in the rainforest by providing financial assistance to poor countries as a substitute for income previously obtained from timber. Create animal reserves Create animal reserves where animal cannot be caught and hunted. Reduce greenhouse gases Reduce greenhouse gases to prevent temperatures from rising.

Lake Chad in a 2001 satellite image, with the actual lake in blue. The lake has shrunk by 95% since the 1960s

 Reforestation  Organic Fertilizers  Reduction of pollution  Crop Rotation

Reduction of all the points we have talked before Noise barriers on roadways Alteration of roadways surface Promote the protection of the ears

Consist on emitting artificial light into the environment. Effects: Alteration of natural balance between day and night. Sleep disorders Stress Eye diseases

Organic compounds, from power stations, boats or some waste of industries, such as phenols, hydrocarbons, detergents, etc.. Produce water eutrophication due to a decrease in oxygen concentration, as it allows the development of living organisms and these consume O2.

For example, some of this substances could be recycled and them used to other purpose Other idea is to store this substances in tanks, the problem of this idea is where you can store all this waste substances…

Pollutants from traffic: gases and particles emitted by cars and other vehicles include a complex mixture of many pollutants. Material erosion of the roads, as well as the wear of the tires and brakes can also produce contaminants.

today, we can say that everyone has a car. But increasingly, the motorsports industry takes electric car models, if in the future this percentage increases, this problem may disappear. meanwhile, we can help by using more public transports or not using the car for short journeys