Question

living together
symbiosis. one sym bio tic relationship
is parasitism. a parasite is an organism that
lives off its host animal and may cause
phys ical harm. logists
geo bio psych
consider a mosquito to be a parasite
because it feeds off blood. mosquitoes may
also deliver parasites that live inside the
body. one example is the single - celled

Explanation:

The question is about symbiotic relationships (parasitism) and organisms like parasites. The term "logists" here should be filled with "Bio" as biologists study living organisms and their relationships (like parasitism). Geologists study earth - related aspects and psychologists study the mind/behavior, which are not relevant here.

Answer:

Bio