Climate change is one of the greatest challenges facing humanity today, with significant impacts on the global ecosystem. Rising earth temperatures due to the accumulation of greenhouse gases affect weather patterns, soil fertility and the survival of various species. In the context of ecosystems, the decline in biodiversity is an urgent problem. Many species rely on particular habitats for their survival; changes in temperature and rainfall cause this habitat shift. For example, deforestation in the Amazon, caused by climate change and human activities, threatens its biodiversity. Climate change also affects the oceans. Global warming results in an increase in sea surface temperatures, thereby affecting marine ecosystems such as coral reefs. Coral reef bleaching, due to stress caused by high temperatures, reduces the number of species that can survive in the environment. In addition, the acidity of seawater increases due to the absorption of carbon dioxide, which has a negative impact on organisms such as shellfish and plankton. The impacts of climate change are not limited to species. Ecological processes, such as pollination and food chains, are disrupted by extreme weather changes. For example, changes in the timing of plant blooms can cause a mismatch with the timing of the emergence of pollinating insects, resulting in reduced food production. Meanwhile, land conditions are also affected by the impacts of climate change. Rising temperatures and decreasing rainfall in some regions are causing drought, reducing soil fertility and increasing erosion. Crops that depend on stable water conditions face major challenges, which can lead to reduced agricultural yields. The problem of climate change is also closely related to extreme phenomena, including storms, floods and forest fires. The increase in the frequency and intensity of natural disasters not only disturbs humans but also disrupts the ecosystem structure. Habitat loss due to forest fires, for example, results in the loss of species and disrupts interactions between those species. The influence of climate change on global ecosystems is extensive and complex. Each species in an ecosystem functions as part of an interconnected food web; therefore, changes to one element can impact many others. Meanwhile, mitigation efforts, such as reducing carbon emissions and protecting habitats, are becoming increasingly urgent to maintain ecological balance. The importance of collaborative action cannot be understated. Countries need to coordinate on environmental policies and the protection of endangered species. Public awareness through education also plays an important role in fighting climate change. Initiatives such as reforestation, renewable energy development, and sustainable agricultural practices are critical to protecting ecosystems. Encouraging environmentally friendly technology can reduce carbon footprints, and protect natural products while ensuring their sustainability for future generations. Climate change and its impact on global ecosystems is a multifaceted issue that requires urgent attention and action. The sustainability of ecosystems depends on steps taken today to mitigate their negative impacts in the future.