In a population study using the transect method, a student is likely to record the highest number of species in?

The diagrams above represent a group of insects known to be

I. High birth rate and high immigration rate

II. Low birth rate and high immigration rate

III. Low mortality rate and low emigration rate

IV. High mortality rate and high emigration rate.

Which combination of the above can cause rapid over-crowding in climax biotic communities and human settlements? 

A group of organisms of the same species living in a particular place is known as