sight of her offspring, or when two familiar individuals cannot find each other, their individual pitches help navigate back into a group. Body language can be used to indicate numerous things such as a nearby predator, to indicate to others that food has been found, and to demonstrate their level of attractiveness in order to find a mating partner, and even more. However, mammals such as dolphins and humans are not alone communicating within their own species. Peacocks can fan their feathers in order to communicate a territorial warning. Bees can tell other bees when they’ve found nectar by “dancing” when they return to the hive. Deer may flick their tails to warn others in their trail that anger may be approaching. Intra organismic communication Intra organismic communication is not solely the passage of information within an organism, but concrete interaction between and within cells of an organism mediated by signs. This could be on a cellular and molecular level. An organism's ability to interpret its own biotic information is extremely important. If the organism is injured, falls ill, or must respond to danger, it needs to be able to process that physiological information and adjust its behavior. Take sweating for example, when the human body starts to overheat, specialized glands release sweat which absorb the heat and then evaporates. This communication is imperative to survival in many species including plant life. Plants lack a central nervous system so they rely on a decentralized system of chemical messengers. This allows them to grow in response to factors such as wind, light, plant architecture. Using these chemical messengers, they can react to the environment and assess the best growth pattern. Essentially plants grow to optimize their metabolic efficiency. Humans also rely on chemical messengers for survival. Epinephrine, also known as adrenaline, is a hormone that is secreted during times of great stress. It binds to receptors on the surface of cells and activates a pathway that alters the structure of glucose. This causes a rapid increase in blood sugar, which is just one of the effects adrenaline has on humans. It also activates the central nervous system increasing heart rate breathing rates, this prepares the muscles for the body's natural fight or flight response. Organisms rely on many different means of intra organismic communication. Whether it is through neural connections, chemical messengers, or hormones it all evolved to respond to threats,