Who proposed the Competitive Exclusion Principle?

Match List-$I$ with List-$II$.

List-$I$ (Interacting species)	List-$II$ (Name of interaction)
$A$. $A$ Leopard and a Lion in a forest/grassland	$I$. Competition
$B$. $A$ Cuckoo laying egg in a Crow's nest	$II$. Brood parasitism
$C$. Fungi and root of a higher plant in Mycorrhizae	$III$. Mutualism
$D$. $A$ cattle egret and a Cattle in a field	$IV$. Commensalism

Choose the correct answer from the options given below.

Explain the general information about population interaction and show the various outcomes observed between them.

When pheromones are secreted onto the skin surface,their scent affects . . . . . . .

Statement-$I$: In the absence of predators,prey species population can decline and cause ecosystem instability.
Statement-$II$: Predators are prudent in nature and overexploit their prey.

There is more competition for survival between: