The term "microscopic" refers to objects or organisms that are too small to be seen with the naked eye. These tiny entities often require a microscope for observation. Microscopic items can include bacteria, viruses, and even some types of cells, which play crucial roles in various biological processes. In science, studying microscopic structures helps researchers understand the complexities of life and the environment. For example, microscopic algae are essential for producing oxygen in aquatic ecosystems, while microscopic fungi contribute to decomposition and nutrient cycling in soil.