Such findings might include changes in the presence or absence of animals in the area and possibly changes in the water quality.
Get your class to adopt a river, stream, wetland or watershed in your area. By adopting an area of land you will be able to monitor its water quality, plants and animal distribution. At the end of the year your class can discuss your findings. Such findings might include changes in the presence or absence of animals in the area and possibly changes in the water quality. Take the discussion a step further by imagining how these changes may impact the living things within your adopted area and surrounding areas.