profit percentage equation 1) operation special car The response to single factor value is trend. The tendency is the selection bias produced by the stimulation of the organism on a single environmental factor, which is the directional response form of the organism to the external stimulus, including the two basic forms of orientation and avoidance. The tropism has the tendency of phototropism, thermal tendency, wetness, tendency, and oxygenicity. It has the avoidance of light, heat, moisture, anaerobic and so on. For example, the acidity of paramecium, the thermal tendency of bedbugs and the phototropism of insects. The trend is the common response of low biological cells, biological tissues and protozoa. Tropism is in a series of internal inductance organically combined in a certain direction, to form a structure of ordering, and external single environment factor to form a single reaction, the biological function between the body and the external environment on the coherent function, to accelerate the ordering of the body development. When this series of inductivity is combined in a positive way, the tendency is formed. When this series of induction is combined in reverse, it forms a negative trend - the avoidance. In summary, the trend is the most elementary preordinate response to the external things of single factor value. ? Social Value: The social net profit of your organisation is understood to be the economical value made for the society. It measures the positive ramifications from the business on its human capital. Healthy labour practices, corporate community development and workplace behaviour are some from the key metrics towards measuring the social value of your organisation. This approach seeks to align the business interests while using labour interests within the organisation.The social sustainability approach seeks to develop and nurture sustainable relationships from the external and internal community. It is easy to draw the conclusion that on the condition that businesses make a profit by exploiting on human resources, falsifying on products and neglecting the after-sales service, they will not success in a long run. Only the businesses thinking in the overall respects can survive and thrive all the time. According to the length, there are mini passenger cars (no more than 3.5 meters), small passenger cars (3.5-7 meters), medium-sized buses (7-10 meters) and large passenger cars (more than 10 meters).