Global warming is a phenomenon of increasing the average temperature of the earth’s atmosphere, oceans and land caused by the accumulation of greenhouse gases. The impact on the ecosystem is very significant and long-lasting. This climate change affects various biotic and abiotic elements, including habitat, species, and interactions between species. The first impact of global warming is changes in weather patterns. Many areas are experiencing an intensification of extreme weather such as floods, droughts and storms. These changes disrupt the reproductive cycles of animals and plants, which can lead to population declines of certain species. For example, some fish species that are sensitive to water temperature show a decrease in their reproductive numbers. Temperature changes also impact natural habitats. Previously stable habitats are now threatened. For example, tropical rainforests can lose biodiversity due to unexpected increases in temperature and rainfall. Many species are forced to move to higher altitudes or latitudes to find more suitable conditions, but not all can adapt, increasing the risk of extinction. Additionally, global warming disrupts the food chain. Food-producing organisms, such as plankton in the ocean, can be affected by changes in water temperature and acidity. A decrease in plankton amounts results in reduced food sources for species higher on the food chain, including large fish and marine mammals. This creates a domino effect that is detrimental to the marine ecosystem as a whole. Loss of ice at the poles also has a major impact on the ecosystem. Species that depend on ice for survival, such as polar bears and penguins, are experiencing a decline in their habitat and food sources. These changes also cause sea levels to rise which can submerge coastal habitats and threaten the plant and animal life there. Lastly, global warming increases the risk of alien species invasion. Warmer temperatures provide opportunities for non-native species to thrive in new areas. This can damage local ecosystems, reduce biodiversity, and lead to the loss of endemic species that cannot compete with these invasive species. In this context, it is important for us to understand and contribute to global warming mitigation efforts. Small actions such as the use of renewable energy, waste reduction and conservation of natural habitats can help protect fragile ecosystems and ensure the survival of existing species. People also need to be encouraged to care more about the environment, so that the impact of global warming can be minimized and ecosystems can be rehabilitated.