The answer is Ivan Petrovich Pavlov.
He was a Russian physiologist acknowledged principally for his work in classical
conditioning. From his juvenile days Pavlov revealed
intellectual inquisitiveness along with an uncommon vigor which he mentioned to
as "the instinct for research".
Answer:
Modern medicine/developing the theory of the four humors, or fluids
A social problem is a condition that at least some people in a community view as being undesirable. Everyone would agree about some social problems, such as murders and DWI traffic deaths. Other social problems may be viewed as such by certain groups of people. It is essential to find the causes of the social problem before striving to solve it. The social problems prevailing in Nepal can be studied categorizing the in to the following headings.
1. Caste related problem
2. Linguistic problem
3. Gender inequality
4. Class related problem
5. Religious problem
6. Customary, traditional and cultural problems
7. Other problems like Girls' trafficking, Dowry system, Chhaupadi system, Corruption, etc.
Solution of social problems:
1. Mass meeting and publicity awareness programmes should be organized.
2. The public people should be made literate and they should be able to control such problem in their area.
3. The culprits should be punished very severely or hanged until death so other traders have a good lesson to leave this dirty work.
4. The people should be very aware and if people with vary unfamiliar nature appears in the village then should be very much active and vigilant about the activity of the strange person.
