Any biological research includes observation, comparison, description and experiment.
Observation and description provide the accumulation of factual material reflecting objects and phenomena of nature. The comparison method makes it possible to identify the similarities and differences between organisms, species, other biosystems and their parts. An experiment is a recreation of the object or phenomenon under study in specially prepared and controlled conditions. It allows you to actively study natural phenomena and test hypotheses put forward as a result of observation, comparison and other research methods.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.