Explanation: Isobars represent patterns of pressure. They show how pressure is changing over space and can help describe the large scale weather patterns across a region in the map.
The isobars are the lines that are commonly used in a weather map in order to highlight the areas consisting of equal pressure. These places are connected by the lines. It is an important feature of weather map that helps a map reader to understand the atmospheric pressure conditions of different places.
Each line is marked a certain number that represents the amount of pressure existing in that area. The closer arrangement of isobars indicates a greater change in the amount of pressure and wider isobars indicate a gradual change in pressure.
Evolution is a gradual process in which the characteristics of a species are changed in response to its environment over several generations. Evolution depends on the process of natural selection. Some of the changed characteristics (traits) may be beneficial to the organism and it can be transferred to their offspring.
