Climate change is altering ecosystems on a massive scale and at a breakneck speed. As a species' response to its environment evolves, so do its interactions with the physical world and the organisms that surround it. Climate change is occurring on a global scale, yet the ecological consequences are frequently local and vary by location. Living creatures are inextricably linked to their physical environment. Even minor changes in the environment, such as air temperature, soil moisture, or water salinity, can have huge consequences. Such changes have an impact on all species. The most major sorts of ecological impacts of climate change are shifts in species distributions and shifts in phenology.