Question

another sym tic connection is path geo bio commensalism. one organism benefits, without harming or causing any

Explanation:

The sentence is about a symbiotic connection, and "symbiotic" is the correct term. The root "bio" relates to life, and symbiosis is a biological relationship. The missing part of "sym____tic" should be filled with "bio" to form "symbiotic", as it pertains to biological interactions like commensalism (a type of symbiotic relationship).

Answer:

bio