What is a group of populations interacting called?

Population = A group of organisms of one species that interbreed and live in the same place at the same time. Community = A collection of several (or all of the) interacting populations that inhabit a common environment

Explanation:

what map. im not blind are i?

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.