The definition of a concubine is a woman who is a mistress to a man with a wife or who cannot be married to her because of a difference in social status. An example of a concubine is one of the mistresses of an important king who has many wives and mistresses. concubine. concubine.
How do you identify a tree species? It is known that mature, leafy trees, such as redwoods, aspens and oaks, are the best producers of oxygen. Additionally, it is known that a tree produces higher volumes when growing than when mature, because converting air and soil into wood causes the tree to produce more oxygen.
That is an impossible question to answer, as it depends on the health of the tree, its age, its photosynthetic rate, and its respiration rate. In addition to this, the value oâ¦f trees is not to produce oxygen, it is to sequester carbon dioxide. Algae are better oxygen producers than trees.