Earth is called a unique planet since it is the only planet in the solar system which supports life due to its balanced proportions of water, temperature, and oxygen
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.
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Explanation:
I honestly don't know this one
One determinant of the sex ratio of a population is the relative likelihood of survival of males versus females
A. Animals exhale carbon dioxide into the air
