Climate change is an increasingly pressing global issue, affecting ecosystems around the world. A phenomenon caused by an increase in the concentration of greenhouse gases in the atmosphere, such as carbon dioxide and methane, causes the earth’s temperature to rise. This has a direct impact on weather patterns, with some regions experiencing increased rainfall while others suffer from drought. One of the significant impacts of climate change is ocean acidification. Rising water temperatures lead to higher absorption of carbon dioxide, affecting marine life, such as coral reefs. Coral reefs, which are habitat for many fish species, are bleaching due to high temperatures, thereby damaging the marine ecosystem. If this condition continues, it could cause a loss of biodiversity in the ocean, which is important for the balance of the ecosystem. Climate change also causes species migration. Many animal and plant species move to areas with climates more suitable for their survival. For example, migratory birds experience changes in migration patterns, which can affect their reproductive cycles. This not only impacts individual species but also food chains, which rely heavily on inter-species interactions. Another impact is the melting of polar ice. The ice in Greenland and Antarctica is melting which accelerates sea level rise. Rising sea levels threaten coastal ecosystems, including mangroves and seagrass beds, which provide protection for many species and help reduce erosion. Loss of coastal ecosystems can increase community vulnerability to natural disasters. Climate change also impacts agriculture. Extreme weather, such as floods and droughts, can destroy crop yields, threatening global food security. In addition, climate change causes a decrease in soil fertility, because changes in temperature and rainfall can affect nutrient uptake by plants. Forest ecosystems are also not immune from the impacts of climate change. Rising temperatures change the species composition of trees, which can lead to a decline in biodiversity. Forest fires are becoming more frequent due to drier conditions, destroying wildlife habitat and emitting additional carbon into the atmosphere. Human health is also closely related to the impacts of climate change. Changing climate patterns can trigger the spread of diseases, such as malaria and dengue fever, because disease vectors reproduce more quickly in warm conditions. In addition, decreased air quality due to global warming can worsen respiratory health. It cannot be denied that climate change is a major challenge for the sustainability of the global ecosystem. To reduce its impact, international collaboration in mitigation and adaptation is needed. Public education, innovation in green technology, and strict regulations on greenhouse gas emissions are important steps to protect the environment and support the sustainability of our planet. The success of carrying out these steps will determine the future of ecosystems and life on earth.