Global climate change is a phenomenon resulting from an increase in greenhouse gases that affect the earth’s temperature. One of the worst impacts of these changes will be on fragile ecosystems around the world. Rising global average temperatures lead to changes in weather patterns, disrupting natural processes and affecting species populations. One real impact is an increase in the frequency and intensity of natural disasters such as floods, droughts and storms. These changes result in damage to natural habitats that are important for flora and fauna. For example, coastal areas that are frequently exposed to high waves and land erosion are vulnerable to loss of mangrove habitat, which serves as a breeding ground for various fish species. Apart from that, climate change also has an impact on biodiversity. Many species cannot adapt quickly to changing temperatures and weather patterns, leading to extinction. Data from the International Union for Conservation of Nature (IUCN) shows that more than 1 million species are threatened with extinction due to climate change and habitat loss. Changes in temperature also affect animal migration patterns. Species that migrate in search of food or nesting sites sometimes cannot find the necessary conditions at the right time. For example, birds migrating from Europe to Africa experience confusion when temperatures change, disrupting their migration patterns. On the other hand, climate change affects land and marine ecosystems simultaneously. In the ocean, rising temperatures cause coral reef bleaching, which has a direct impact on other species that depend on these habitats. Coral reefs support more than 25% of marine life, and damage to this ecosystem threatens fish resources that are important for human life. Climate change is also causing ocean acidification due to increased carbon dioxide concentrations. This process damages the calcium carbonate structure of marine organisms such as shellfish and plankton. Without plankton, the marine food chain would be disrupted, affecting the entire marine ecosystem. Flora also did not escape this impact. Plant growth can be disrupted by changes in rainfall and temperature. Plants that cannot adapt quickly will fail to grow and affect food availability. Apart from adding to the problem of hunger, this will also affect human health. Climate change also increases the risk of disease spread. Vector species such as mosquitoes change their distribution patterns with changes in temperature and humidity. Diseases such as malaria and dengue fever can spread to new areas, which previously did not have these problems. Therefore, mitigation efforts are important. Reducing greenhouse gas emissions by switching to renewable energy, increasing energy efficiency and environmental conservation are steps that must be taken. International collaboration is also needed so that these measures can be implemented effectively in various countries. Adaptation efforts are also important, including protecting natural habitats and increasing ecosystem resilience to inevitable changes. Research and monitoring of the impacts of climate change will provide better insights for data-based decision making. Overall, the impact of global climate change on ecosystems is a major challenge for humans and all living things. Understanding and overcoming this problem is a shared responsibility that requires serious attention and quick action.