At the early stage of the Universe, the annihilation of matter and antimatter took place. Why does our world still exist, consisting of matter?

The nucleons of the substance of our world are the excess of baryons over antibaryons that existed at the early stage of the evolution of the Universe. This fact forms the basis of the charge-asymmetric model of the Universe.

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.