Environmental Changes Weather changes all the time. The average patter of weather, called climate, usually stays pretty much the same for centuries if it is left to itself. However, the earth is not alone. People are taking actions that can change the earth and its climate in important ways. The single human activity that is most likely to have large impact on the climate is the burning of “fossil fuels” such as coal, oil, and …showed first 75 words of 688 total…

…showed last 75 words of 688 total…to another. This may cause species extinction, lower biodiversity, and changes in the way species interact. • Coral Reefs: Slightly warmer tropical water may kill the algae which reef animals use for food. • Changes in Insect Pests: Climate change can affect the number and kinds of pests directly. It can also affect them by changing the mix of plant varieties and their nutrient content. This can influence plant survival, food chains, and the spread of diseases.