Select group of linear species :

A group of interacting species living in a particular ecosystem constitute a

A group of interacting species living in a particular ecosystem constitute a

Select from each group of the species which has the smallest radius stating appropriate reason. O, O^- , O^(2-)

The weakest +m group of the given species by:

Amongst the following, the linear species is :

The group fungi has more species than all the vertebrate species combined.