Start by observing the living species around you. Select two non-human species that interact with each other,such as bees and flowers,or predetor and prey species or two species that compete. Or, you can consider the effect of an enviromental factor on living non-human organisims,such as the effects of light or sound on plants or animals,or how food preference,or nutrient quanity/quality effect plants and animals.just a few examples.Your observations may lead you to many other types of questions about living organisims,their interactions and requirements for life. Start with an introduction and move through the steps of the scientific method, including observations/introduction, question, hypothesis, prediction, method/experiment, data collection, results (made up), and conclusion/discussion.