Why in nature it is impossible to completely destroy predators and parasites?

Because there will be a disruption to the power circuits. Having destroyed parasites and predators, the number of some species will increase, and the number of others will decrease, which is not good.
There is a certain balance in nature that cannot be disturbed.



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.