English · Chapter 31
Study notes aligned to the official NEB syllabus.
Ecology and Development is a Language Development unit of the Grade 11 Compulsory English textbook. Its theme is the relationship between living things and the environment that supports them, set against a country's need to raise living standards, and the hard choices that arise when the two conflict. The unit trains close reading of an informative text on the environment, builds a vocabulary of ecology and conservation, teaches the grammar of future time, and puts this to work through discussion and through writing tasks such as reports, essays and articles. NEB questions on the unit reward the student who explains the text's ideas in his or her own words, uses the environmental vocabulary accurately, and weighs development against conservation instead of taking a slogan for an argument.
Confirm the specific title and author of this unit's reading against your own copy of the textbook, because what follows develops the substance the unit's reading treats rather than a named text.
Ecology studies how living things relate to one another and to the surroundings that keep them alive. Its central idea is the ecosystem: a stretch of forest, a river or a field, together with the plants, animals and micro-organisms in it and the water, soil, air and sunlight they depend on. Nothing in such a system stands alone: plants capture the sun's energy, animals live on the plants and on one another, decay returns nutrients to the soil, and a change at one point travels through the whole. Strip a hillside of forest and the soil goes with the next monsoon. This interdependence is why ecologists value biodiversity: a system with many species has more ways of absorbing a shock than one reduced to a single crop.
Development, in the ordinary sense the unit uses, is the effort to raise living standards through roads, electricity, schools, clinics, irrigation and jobs. It is not the enemy of ecology. Poverty itself damages the environment, since a household with no fuel cuts firewood and a household with no land farms a steep slope. Yet development pursued without thought does real harm: roads cut carelessly into hillsides start landslides, unplanned building swallows farmland and wetland, traffic and industry foul the air, and rivers receive waste that nobody treats.
The idea that reconciles the two is sustainable development, commonly defined as development that meets the needs of the present without compromising the ability of future generations to meet their own needs. In practice it means counting the environment inside a project's cost rather than outside it, assessing impact before work begins, and preferring renewable energy, treated waste and restored forest.
Nepal illustrates both sides. Community forestry, which hands management of nearby forest to local user groups, has allowed cover to recover in many hill districts while still supplying the fuel, fodder and timber those households need, showing that conservation works best when the people nearest a resource have a stake in it. Hydropower is renewable and a national opportunity, yet each project must be weighed against its effect on river flow, fish and displaced families. Glacial retreat in the Himalaya now threatens the summer water supply of the rivers below, and in the Kathmandu Valley the hills trap the winter air, so vehicle exhaust, brick kilns, dust and burnt waste make air quality a daily health problem. The unit leaves a question rather than a slogan: how may a poor country grow without spending the natural capital its grandchildren will need?