What is it called when an organism signals another that their interaction is not serious or threatening? cooperation metacommunication agonistic interaction courtship?

The answer is metacommunication. Utilizes cues that are interpreted by the individuals of a population into useful information.  Kinesics, referring to body motion communication, is also a part of metacommunication. It also applied to humans where posture, gesture, stance, and movement are also interpreted as cues  in communication.

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.