Question

which of the following practices is considered a sustainable approach to agriculture?
a. single - crop farming techniques
b. conventional farming with chemicals
c. agroforestry combining trees and crops
d. soil depletion over time
the green revolution primarily increased agricultural production in which type of countries?
a. developing countries needing food
b. developed nations with industries
c. urban areas with dense populations
d. island nations with small areas

Explanation:

First Question (Sustainable Agriculture Practice)

• Option a: Single - crop farming (monoculture) often leads to soil depletion, pest problems, and reduced biodiversity, so it's not sustainable.
• Option b: Conventional farming with chemicals (like synthetic fertilizers and pesticides) can pollute the environment, harm non - target organisms, and degrade soil quality over time, not a sustainable approach.
• Option c: Agroforestry combines trees and crops. Trees can improve soil quality (e.g., through leaf litter and root systems), provide habitat for beneficial organisms, and diversify production, making it a sustainable agricultural practice.
• Option d: Soil depletion over time is a negative outcome, not a sustainable practice.

• The Green Revolution aimed to increase food production in developing countries that were facing food shortages. It introduced high - yielding crop varieties, modern agricultural techniques, etc. to boost agricultural output in these countries.
• Developed nations already had relatively advanced agricultural systems and were not the primary target of the Green Revolution.
• Urban areas are not the main focus of agricultural production increase via the Green Revolution as urban areas are more about non - agricultural activities.
• Island nations with small areas were not the primary target group of the Green Revolution which was focused on developing countries with food - security issues.

Answer:

c. Agroforestry combining trees and crops

Second Question (Green Revolution and Country Type)