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5. 2)
The composition of a population in terms of the proportions of individuals of different ages; represented as a bar graph with younger ages at the bottom and males and females on either side.
3)
The sex ratio is the ratio of males to females in a population.
4.
2)*Labour intensive
*Low cost
*Production
3) Agriculture also plays an important part in rural development, especially due to land use, in countries where the sector is of less economic significance.
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