Nature Nurture concept

all below questions must be answered based on the attached lessons in question then answer format
no information from outside the attached should be there
type the question and then answer below it
QUESTION AND ANSWER FORMAT KEEP IT SIMPLE AND USE EASY WORDS PLEASE

for lesson1
What do twin studies contribute to our understanding of the interaction between nature and nurture in development?
What is the mechanism behind how identical twins can have different health conditions, and how does it work? [Asked in a different way: Explain the action of the epigenetic mechanism of methylation and how it contributes to the nature/nurture interaction.]
lesson2
Which mechanisms explain how children may start development differently from their parents?
How do children become different from each other? Give an example.
lesson 3
What are the four major lobes of the brain and what are their broad functions?
What is experience-expectant plasticity? Give an example.
What is experience-dependent plasticity? Give an example.
lesson 4
Think of some examples from your personal and/or professional life when you have observed another person with interest and the intention to understand what is happening.
What did you do as you made your observation?
What were you thinking as you made your observation?
How did you come to a conclusion about what was happening and why?
What were your thoughts about how you could change as a result of what you observed?
How did you change, if you did?
Did it work? What changes did you make that are now embedded in who you are?
How did observation and assessment help you understand what was happening and what change you could make?