The average surface temperature of the Earth has been kept at around 15°C by greenhouse gases, such as CO2 and methane, for a substantial period of time. Now this atmospheric balance is falling out of order, raising concerns about global warming. Even slight increases in the average temperature can significantly affect the Earth's ecosystem. To help preserve our natural environment for the next generations, we need to create recycling-oriented societies and do what we can to prevent global warming.
Carbon dioxide is produced by living organisms and emitted by industrial activities. After being released through photosynthesis, the gas circulates among air, soil, and sea water on the Earth. This carbon cycle of the Earth's climate system maintains concentrations of CO2 in the atmosphere to a certain level, stabilizing the temperature of the Earth.
However, the average surface temperature of the Earth has risen by 0.74℃ over the past 100 years. In Japan, the increase has been above the average: 1.1℃. If average temperature increases by 1℃, the climate in Tokyo will become identical to that of Miyazaki in southern Japan.
Global warming has various negative impacts on our lives, such as the destruction of earth's ecosystem, frequent climatic anomalies, elevation of water levels, and other events that can cause us to lose our homes, suffer food shortages, and face challenges to our survival.
To prevent global warming it is indispensable to achieve a low-carbon society that reduces emissions of greenhouse gases, including CO2. We need to reexamine our ways of living, which currently is destroying earth's natural environment and requires consuming large amounts of energy for production. We need to think about what we can do such as reusing or recycling.
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