Organisms respond to environmental changes through various adaptations that help them survive. These adaptations can be physical, like the thick fur of polar bears in cold climates, or behavioral, such as birds migrating to warmer areas during winter. These responses ensure that species can thrive despite fluctuations in their surroundings. In ecosystems, plants also react to environmental changes. For instance, cacti have developed water-storing capabilities to survive in arid conditions. Similarly, trees may shed leaves during droughts to conserve water. Such responses are crucial for maintaining balance within ecosystems and supporting biodiversity.