Niels Bohr - Biographical. Niels Henrik David Bohr was born in Copenhagen on October 7, 1885, as the son of Christian Bohr, Professor of Physiology at Copenhagen University, and his wife Ellen, nÃ©e Adler.
Opuntia is a large genus of plants native to North America and South America. All have succulent stems, some of them becoming woody with age. Stems may be cylindrical or flattened pads. Tiny, succulent leaves may be present on the newest growth (see photo below.) Most species are spiny.
Many people despise the Opuntia, even those who otherwise love growing cacti. In recent times, however, there seems to be a renewed interest in the genus-particularly the species native to the Southwest U.S. and it is gaining in popularity.any people despise the Opuntia, even those who otherwise love growing cacti. In recent times, however, there seems to be a renewed interest in the genus-particularly the species native to the Southwest U.S. and it is gaining in popularity.