Absorb carbon dioxide,
Pines fix the sands.
The first to populate conflagrations, clearings.
Phytoncides that kill bacteria are isolated.
Snow melting is delayed, enriching the soil with moisture. Coniferous litter – organic fertilizers in the forest. They create conditions for the growth of other plants. Seeds are food for birds. Purify the air
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.