I am sure it is the first answer, to speak up when you need information restated or explained.
Migration is affected by various factors like age, sex, marital status, education, occupation, employment etc. People migrate to those places where they have better facilities of health services, educational services, transportation and communication and the life is easier.
I had a lab and she had 6 pups all together but only 5 survived.
Answer:
the awnser is dopamine. dopamine plays a role in the sensation known as pleasure .
