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.
Petunia is a type of flowering plant that belongs to the family of nightshades. There are 35 species of petunia that originate from South America. Petunia was introduced to Europe in the 19th century where it instantly gained popularity as decorative, garden plant. Petunia grows in areas that provides at least 5 to 6 hours of sun per day, on a well-drained, fertile soil.