Biological techniques refer to methods used in biology to study living organisms and their processes. These techniques can include microscopy, which allows scientists to observe cells and tissues, and DNA sequencing, which helps in understanding genetic information. Other methods, such as PCR (Polymerase Chain Reaction), enable the amplification of specific DNA segments for further analysis. These techniques are essential in various fields, including medicine, genetics, and environmental science. They help researchers develop new treatments, understand diseases, and assess biodiversity. By employing these methods, scientists can gain insights into the complex interactions within biological systems.