Answer:
A. Systematic
Explanation:
it is because he ask each student in that particular class, so that he question them in a systematic way.
I think the cool down for the hot food or placing is a time period
Maybe because they have seen both your strengths and weaknesses and know you to that extent.
You have confidence that they have confidence in you.
The teacher,student relationship is good.
Maybe because they understand you better than other teachers.
The organisms become specialized for individual tasks and communicate with each other.
Answer:
I would put "preserver" because the lines have even preserved for 2,000 years and still exist to this day