The color of the leaves of trees, shrubs depends on the presence of chlorophyll grains in the cells of the plant. In summer, as a rule, the leaves are green, in autumn the color of the leaves takes on a red, yellow color, but in the spring the leaves are light green. The color contrast depends on the structure of the leaf. The shiny surface of the leaf makes it brighter, leaves with the thinnest bloom look dull. But there are trees, for example, blue spruce, its color does not depend on the season.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.