Which of the following is an example of a positive interaction in a population?

Fill in the blanks:

Species $A$	Species $B$	Type of Interaction	Example
$+$	$-$	$(a)$	$(b)$
$+$	$+$	$(c)$	$(d)$
$+$	$(e)$	Commensalism	$(f)$

Which of the following is an example of predation?

Even a plant species,which makes its own food,cannot survive alone; it needs soil microbes to breakdown the $A$ matter in soil and return the $B$ nutrients for absorption. And then,how will the plant manage pollination without an animal agent? It is obvious that in nature,animals,plants and microbes cannot live in $C$ but interact in various ways to form a biological community. Choose the correct option for $A, B$ and $C$.

The interaction between two living organisms of different species which is beneficial to both but is not obligatory because they can live without each other is known as

Which type of interaction is seen between sea anemone and clown fish?