Social, cultural and economic factors influence fertility, mortality and migration rates. Migration is affected by various factors like age, sex, marital status, education, occupation, employment etc. Age and sex are main demographic factors that affect the migration.
Answer:
A New Kind of Light in the Universe? “Super-Planckian” Material Emits Light That Exceeds Limits of Natural Law
Spatial perspective is to study something in terms of location, distance and direction. Meanwhile, ecological perspective is to study something in terms of environment and social interaction. Good luck!
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