Describe commensalism.

(N/A) Commensalism is a type of population interaction in which one species benefits,and the other species is neither harmed nor benefited.
Examples include:
$1$. An orchid growing as an epiphyte on a mango branch.
$2$. Barnacles growing on the back of a whale; the barnacles benefit from movement to nutrient-rich waters,while the whale derives no apparent benefit or harm.
$3$. The cattle egret and grazing cattle: The egret forages close to grazing cattle because the cattle stir up and flush out insects from the vegetation,making them easier for the egret to catch.
$4$. Sea anemone and clown fish: The clown fish gets protection from predators by living among the stinging tentacles of the sea anemone,while the anemone receives no benefit or harm.