Biological experiments are scientific tests conducted to understand living organisms and their processes. These experiments can involve studying cells, plants, animals, or ecosystems to gather data about how they function, grow, and interact. Researchers often use controlled environments to isolate specific variables, allowing them to observe the effects of changes in conditions. Common methods in biological experiments include microscopy to examine cells, genetic analysis to study heredity, and field studies to observe organisms in their natural habitats. The results from these experiments contribute to our knowledge of biology and can lead to advancements in medicine, agriculture, and environmental conservation.