In, 1898 the Russian cytologist S. G. Navashin discovered double fertilization in angiosperms, which consists in the union of a sperm-ucleus with an egg cell nucleus and the union of a second sperm nucleus with the nucleus of an endosperm-producing cell.
Bioculture is the combination of biological and cultural factors that affect human behavior. Bioculture is an area of study bounded by the medical sciences, social sciences, landscape ecology, cultural anthropology, biotechnology, disability studies, the humanities, and the economic and global environment.
Split and merge into it. Answer by Cyndestina. Confidence votes 45. Cultural eutrophication is an increase in biological productivity and ecosystem succession caused by human activity. It is mainly caused by increased nutrient input into a water body. Increased productivity in an aquatic system sometimes can be beneficial.