Give geographical reason: In developed countries, percentage of population engaged in agriculture is low.

Answer: Because their economies depend mainly on secondary and tertiary activities and agriculture is highly mechanised.

• Developed countries such as the USA, the UK and Japan are highly industrialised; most people work in manufacturing and services, which give higher incomes.
• Agriculture there is mechanised and scientific: tractors, combine harvesters, irrigation and fertilisers allow a few farmers to cultivate very large farms.
• High urbanisation, education and technical skills draw people to jobs in cities.
• Hence only a small share of the workforce (often below 5%) is engaged in agriculture, though production is high.