There is more competition for survival between

Choose correct group for commensalism from the following

$(a)$ The cattle egret and grazing cattle

$(b)$ Barnacle balanus and Barnacle chathamalus

$(c)$ Goat and Abingdon turtle from Galapagosisland

$(d)$ Barnacles growing on the back of whale

What is the ecological principle behind the biological control method of managing with pest insects?

What is a keystone species

Competition occurs when

If the strong partner is benefitted and the weak partner is damaged. It is known as