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.
One large tree can provide a day's supply of oxygen for up to four people. Each year, one person uses wood and paper products equivalent to a 100 foot tree 18 inches in diameter. Over 5,000 products are made from trees. Trees are included in most religions. Some hold certain trees sacred; other use trees to help teach beliefs.