[Global Warming] Explanation of Global Warming, Crisis Scenario for the Earth in

Global warming is a phenomenon where the average temperature on Earth rises, mainly due to the increase in greenhouse gases caused by human activities. This phenomenon can lead to a variety of crises, including climate change, rising sea levels, and ecosystem destruction. Below, I will elaborate on the causes of global warming, the current situation, and the crisis scenarios expected in the future.

Causes of global warming
- Greenhouse gas emissions: Greenhouse gases such as carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) trap heat in the atmosphere and raise the Earth's temperature. These gases are generated primarily from fossil fuel burning, agriculture, industrial activities.
- Deforestation: Trees play a role in reducing greenhouse gases in the atmosphere by absorbing CO2. But when deforestation is destroyed, this process is disrupted, increasing greenhouse gas concentrations.
- Industrialisation: Industrialisation increases energy consumption, which further accelerates greenhouse gas emissions. Specifically, the use of fossil fuels like coal and oil is a major driver.

Current situation
- Temperature rise: As of 2023, the average temperature on Earth has risen by about 1.2 degrees from pre-industrial levels. It's an indicator of the severity of climate change.
- Extreme climate phenomena: Extreme climate phenomena such as heat waves, floods and droughts have been frequent in recent years. This phenomenon is having serious consequences for agriculture, ecosystems and human survival.

future crisis scenario
1. Sea level rise
- Risk: Rising sea levels increase the risk of flooding low-lying areas. This can lead to millions of people moving.
- Estimated figures: Sea level is expected to rise by up to one meter by 2100, which threatens many cities and agricultural fields.

2. Ecosystem destruction
- Danger: Climate change could cause many animals and plants to lose their habitat and become endangered. In particular, marine ecosystems will be hit hard by acidification and rising temperatures.
- Expectations: Biodiversity is reduced, which could disrupt the balance of ecosystems, affecting human food supplies as well.

3. Food security crisis
- Risk: Agricultural productivity may decrease due to climate change, which could lead to global food shortages.
- Expectations: Concerned about rising food prices and deepening hunger problems.

4. Health problems
- Risk: Climate change could promote the spread of infectious diseases, and health problems from heat and air pollution would increase.
- Expected results: Increased respiratory disease, cardiovascular disease, etc. are expected.

Conclusion
Global warming is a serious crisis that goes beyond just environmental issues and is directly related to human survival. If the current trend in greenhouse gas emissions continues, we will not be able to avoid more extreme climate change and the catastrophe that will ensue. Therefore, international efforts are urgently needed to ensure sustainable development and greenhouse gas reduction. Our small practices to protect the planet can make a difference.