Like a Close Relationship Between Two Organisms

This page is the CodyCross answer for the clue below from Campsite Adventures, Group 829, Puzzle 5 (Muddy Boots).

Question is: Like a Close Relationship Between Two Organisms

and the answer is: SYMBIOTIC

Word Meaning:

SYMBIOTIC — (ecology) Of, or relating to symbiosis; living together.

Definitions from Wiktionary.