By Friday Simbaya, Iringa Climate change will affect nature’s ecosystems and the habitats that support life—from oceans to grasslands to forests. Changes are expected to alter the makeup and functioning of ecosystems, as well as some of the critical benefits that ecosystems provide to people; this is according to United States Environmental Protection Agency (EPA). Climate change can threaten ecosystems that have already been weakened by other human activities such as pollution, development, and overharvesting. This fact sheet describes some of the ways that climate change affects ecosystems. What Is an Ecosystem? An ecosystem is an interdependent system of plants, animals, and microorganisms interacting with one another and with their physical environment. Ecosystems provide people with food, goods, medicines, and many other products. They also play a vital role in nutrient cycling, water purification, and climate moderation. Rece...