meaning of profit in business Hybrid cars, which add an internal combustion engine to pure electric vehicles, aim to reduce the pollution of cars and improve the mileage of pure electric vehicles. Hybrid vehicles have serial and parallel structure. The independent of interest is of positive significance to show the active role of the fund users in the reproduction process. In the early 20th century, famous American economist elvin fisher developed the theory of economic gain. In its book "the nature of capital and yield", first, the concept of yield is analyzed in terms of the performance of earnings, and three different types of benefits are proposed: Managing Director Martin Nettleton says: “Last month, we saw a record number of interactions from our website as a result of our advertising and PR, with enquiries coming directly from the contact form online, via email and via calls into our customer service department. British Glass is organising a one-day seminar on funding for decarbonisation and energy efficiency work on Thursday 2 November (north of England, venue TBC) – which will be attended by British Glass members’ and non-members.