Climat change and its impact on our future.pptx

Climat change and its impact on our future

1. Theme : Climate change and its impact on our future Directed by : Hamze Hassan Guinyo Said Wais Ferouze Mouchtak Mohamed Hamza Abdoulkader Youssouf Djama Mohamoud Djama Supervised by : Djouweiria Samireh Djama University of Djibouti School Year: 2024 /2025

2. Plan Introduction I – Cause a) Energy production b)Deforestation II – Consequence a) Ozone hole b)loss of biodiverty III – Solutions a) Reduction of greenhouse gases b) Use of alternative energy sources c)Reduction of emissions from transport Conclusion

3. Introduction Climate change is one of the most pressing challenge of our time, with profound implications for the future our planet and humanity .

4. I - Cause Energy production : Fossil fuels coal, oil and gas are by far the biggest contributors to global climate change, accounting for more than 75% of global greenhouse gas emissions and almost 90% of all carbon dioxide emissions. Greenhouse gas emissions blanketing the Earth trap heat from the sun. This leads to global warming. The planet is warming faster today than at any time in history. Over time, higher temperatures change weather patterns and disrupt the usual natural balance. This poses many risks to humans and all other life forms on Earth.

5. Deforestation : If these forests are destroyed, carbon is released again in the form of greenhouse gases, particularly in the event of clearing by fire. Thus, gigantic quantities of CO2 are released into the atmosphere. Greenhouse gases from deforestation by fire contribute significantly to global warming. A fifth of greenhouse gas emissions due to human activities come from the destruction of forests.

6. II – Consequence Ozone hole : The degradation of the ozone layer implies less filtration of the most harmful ultraviolet rays and an increase in risks for terrestrial life: superficial burns, conjunctivitis, cataracts increase in cancers and aging of the skin immune system diseases reduction in photosynthesis: reduction in crop yields and quality, disappearance of plankton, the first link in aquatic food chains, etc.

7. Loss of biodiverty : They lead to the destruction, degradation and fragmentation of habitats (abrasion of the seabed, cultivation of meadows, loss of connectivity, disruption of hydrology), the disturbance of species, the degradation of soils, their functions and of their biodiversity.

8. III – Solution Reduction of greenhouse gases : Climate change mitigation involves reducing the flow of heat-trapping greenhouse gases in the atmosphere. This involves reducing greenhouse gas emissions from major sources such as power plants, factories, cars and farms. Forests, oceans and soils also absorb and store these gases and are an important part of the solution. To reduce and avoid our emissions, we need to rethink everything we do, from how we fuel our economy and grow our food, to how we travel and live, and the products we consume. It’s a problem felt locally and globally.

9. Use of alternative energy sources : Energy is at the heart of the climate challenge and the key to the solution. Much of the greenhouse gases that blanket the Earth and trap the sun's heat are generated by energy production, burning fossil fuels to produce electricity and heat. Fossil fuels, such as coal, oil and gas, are by far the largest contributors to global climate change, accounting for more than 75% of global greenhouse gas emissions and nearly 90% of all emissions. of carbon dioxide.

10. Reduction of emissions from transport : The main methods for reducing CO2 emissions linked to transport : Use public transport and soft mobility (walking, cycling) Carpool and optimize your travel Opt for electric or hybrid vehicles Adopt economical driving and maintain your vehicle Encourage teleporting when possible These combined actions can significantly reduce the carbon footprint linked to transport.

11. Conclusion Climate change represents a major challenge to our future , but concerted actions at all levels of society can help mitigates its effects and build a more sustainable future .