Natural resources and waste Contamination and global warming Loss of biodiversity Deforestation ENVIRONMENTAL DEGRADATION The extraction of natural resources has tripled since 1970. In high-income countries, demand is over ten times higher than in low-income countries. If we continue at the current rate, by 2050 we will need the equivalent of three planets to meet the demand for resources. Forests cover nearly one third of the Earth's surface, around 4.06 billion (4,060,000,000) hectares. Since 1990, 420 million hectares of forest have been lost. Increase in the average temperature of the Earth's Surface: +1 oC since 1850-1900 A RISE FROM 1.5 ºC TO 2 ºC WILL MEAN: Up to 47 % 21 % 40 cm 46 cm +1.5 ºC +1.5 ºC +2 ºC +2 ºC Melted Arctic ground ice Rising sea levels Between 1990 and 2020 they rose 8 cm MAIN CAUSES: Modification or loss of habitat Climate change Pollution Illegal hunting Overfishing Introduction of exotic invasive species Modified by human activity: At the current rate, this will increase to: +1,5 oC by 2050 +2 oC by 2100 On the planet there are around 8 million species of animals and plants. There are an estimated 1 million in danger of extinction. Conserving our natural heritage is vital for human development The United Nations estimates that 2.6 billion (2,600,000,000) people depend directly on the land to earn a living. Caring for the land is essential for food and water security. You will raise awareness of the importance of land through a photo exhibition. 75 % of terrestrial ecosystems. 66 % of marine ecosystems. They must be reduced by half so they do not exceed +1,5 oC MAIN CAUSE The rise in CO2 emissions: 90 % since 1970 Only 25 % have not been modified by human activity. Only about 726 million hectares of forest are protected. Our consumption generates 11.2 billion (11,200,000,000) tonnes of solid waste per year. I N T H I S U N I T. . . You will discover the importance of maintaining healthy natural resources. You will analyse two essential natural resources: the landforms and waters of the world. You will think about the condition of the Earth's climate. You will take action to raise awareness of the importance of biodiversity on the planet. CHALLE NGE 9
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