Rachel has a pessimistic attitude. she worries incessantly about things and can never seem to see the positive side of life. according to the biological perspective, rachel's attitude could best be explained by low levels of multiple choice glutamate. serotonin. dopamine. adrenaline.

Having a pessimistic attitude shows having low levels of SEROTONIN. Being pessimistic shows that a person always thinks of the worst or always thinking negative. Some study states that low levels of serotonin will give a person a tendency to be depressed and to feel down.

swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.