The territory of Peru and the Peruvian Islands is the birthplace of the famous guano. What it is?

This is bird droppings that accumulate in bird colonies due to the warm climate and lack of rain. Valuable fertilizer.

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.