<span>Le Morte d'Arthur is a reworking of existing tales by Sir Thomas Malory about the legendary King Arthur, Guinevere, Lancelot, Merlin, and the Knights of the Round Table. </span>
Answer: self production
Explanation: Plants tends to manufacture for them self unlike animals, they use the energy gotten from the sun to convert carbon dioxide and water in energy rich sugar called glucose.
Also plants use leaves to make food for them self, oxygen is produced as a by-product and carbon dioxide is gotten from the atmosphere.