What is biological diversity characterized by?

1) Genetic heterogeneity of individuals in populations.
2) The variety of populations that make up the species.
3) The diversity of species in ecosystems and ecosystems in the biosphere.

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.