The answer is D. (Russia)
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:
The blank would be River
Explanation:
"River deltas are important in human civilization, as they are major agricultural production centers and population centers. They can provide coastline defense and can impact drinking water supply. They are also ecologically important, with different species' assemblages depending on their landscape position."
Hope this helps
the question relies on which part of the earth
C. The Rocky Mountains I believe, Mt. Elbert is in Colorado and the Rocky Mountains go through Colorado.
