ইংরেজী ১ম পত্র প্রশ্ন

(3) Biodiversity, the variety of all living things on Earth, is the foundation of human livelihood. Farmers depend on diverse crops, pollinating insects and healthy soil organisms to produce our food. Millions of people in Bangladesh earn their living from fish, honey, timber and other resources of rivers, wetlands and the Sundarbans. Many life-saving medicines are made from plants and microorganisms found in nature. Forests and wetlands also purify air and water, control floods and protect coastal people from cyclones. If we keep destroying habitats, we will lose these free services, so conserving biodiversity is essential for our survival.