Climate change is the long-term change in the Earth’s temperature and weather patterns that occurs as a result of human activities, especially the burning of fossil fuels. The impact of these changes is significant on biodiversity, which refers to the variation of all forms of life, including species, ecosystems and genes. One of the main impacts of climate change is an increase in global temperatures. Higher temperatures affect natural habitats that are important for certain species. For example, species that live in cold climates, such as polar bears, face the risk of population decline due to melting ice in the Arctic. In addition, increasing temperatures also affect the reproduction and migration times of species. Changes in rainfall patterns are another impact. Some areas are experiencing increased rainfall, while others are experiencing extreme drought. This phenomenon affects water availability, which is very important for the survival of flora and fauna. The research results show that drought can cause a decline in the number of species in an area, disrupt the ecosystem and damage the food network. Extreme weather phenomena are also increasing, including stronger storms and flooding. These natural disasters can destroy habitats and threaten the lives of species. Corals on coral reefs, for example, are very sensitive to changes in temperature and can experience bleaching when temperatures rise, which can cause mass die-offs. Habitat loss due to urbanization and deforestation, made worse by climate change, is a major problem. Lost forests not only contribute to carbon emissions but also reduce genetic diversity. Diverse ecosystems have a better ability to adapt to environmental changes. Species migration is also becoming an increasingly common phenomenon due to climate change. Many species move toward higher altitudes or toward the north pole in search of cooler temperatures. However, not all species can move or adapt quickly. This results in an imbalance in the ecosystem and affects endemic species that have no place to migrate. Increasing carbon dioxide concentrations in the atmosphere also have a direct impact on biodiversity through increasing acid CO2 in the oceans, resulting in a decrease in ocean pH. This process, known as ocean acidification, is particularly harmful to marine organisms, such as molluscs and coral reefs, which depend on calcium carbonate to build their body structures. Biodiversity has an important role in ecosystem stability and maintenance of environmental services. Society depends on biodiversity for food, medicine, and other important factors. As biodiversity is increasingly lost due to climate change, risks to environmental sustainability and human quality of life are also increasing. Various efforts need to be made to mitigate and adapt to climate change in order to protect biodiversity. This includes habitat conservation, sustainable management of natural resources, and development of policies that support the survival of threatened species. Public education is also important to increase awareness about the importance of maintaining biodiversity amidst ongoing climate change.