Indicate at least three characteristic features that distinguish pioneer ecosystems from climax (sustainable) ones.

1) A small number of species.
2) Unbranched food chains and a small number of them.
3) Prevalence of species with R-strategy OR Prevalence of species with high reproductive potential and indirect care for offspring

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.