A plain is a large area of flat or gently rolling land that usually has grasses and few trees. Plains can be found on every continent and cover more than one-third of the Earth'slandsurface.
Formation of Plains
Plains are formed by a variety of processes, including:
The student demonstrates an understanding of how science explains changes in life forms over time, including genetics, heredity, the process of natural selection and biological evolution by showing the relationship between physical characteristics of Alaskan organisms and the environment in which they live.