Health, population and environment education is introduced as an integrated subject due to profound interrelationship that exists among the subject matters of these three disciplines. The natural physical aspects and man- made things come under the physical aspect.
passivation is the answers
I think superordinate is the few similarities among the others because it doesn’t sound right
<span>basic research investigates fundamental aspects of behavior, whereas applied research investigates solutions for real-world problems</span>
