Sustainability, Ecology and Environmental Ethics: Key Concepts
1.1 Sustainability
Sustainability: possibility that human and other life will flourish on the planet forever (Ehrenfeld). Sustainable development (Brundtland Report, 1987): meeting present needs without compromising future generations’ ability to meet their own needs.
Triple Bottom Line (Elkington, 1997): Planet = ecological; People = social; Prosperity = economic. Nested model: biosphere → society → economy; society and economy depend on nature.
System: connected elements forming a whole. Emergence:
Read MoreUrbanisation in Lagos: Causes, Impacts and Key Urban Terms
Key Urban Terms
Urban area — a built-up area such as a town or city.
Urbanisation — an increasing proportion of people living in urban areas.
Urban growth — an increase in the number of people living in a city.
Migration — the movement of people from one place to another.
Natural increase — when birth rates are higher than death rates.
Megacity — a city with a population of more than 10 million.
World city — a city with major global influence over finance, business, politics and culture.
Population
Read MoreGeography Study Notes: Water, Agriculture, and Resources
Water Pollution and Conservation in India
1. Causes of Water Pollution and Conservation Measures
Water pollution is the contamination of water by harmful substances, rendering it unfit for human use and aquatic life.
Reasons for Water Pollution
- Domestic sewage: Untreated wastewater discharged into rivers and lakes.
- Industrial waste: Chemicals and toxic substances from factories.
- Agricultural runoff: Fertilisers and pesticides entering water bodies.
- Religious and cultural activities: Waste deposited in
Spain’s Population History and Demographic Shifts
Spain’s population has changed over time due to economic activities, land use, and the history of its inhabitants. It is a country of contrasts where certain areas are highly populated, such as service, industrial, and coastal zones, while others are less populated, like mountainous or arable areas.
Historical Population Trends
Before the 19th Century
It is difficult to determine Spain’s exact population before the first census, but we can estimate it thanks to historical events that affected society:
Read MoreComprehensive Environmental Studies Notes for Students
Here is the extracted text from the study sheet, organized line-by-line and section-by-section to match the original document’s structure:
Environmental Studies Complete Study Sheet
Pure Black & White Printing Edition | 100% Unabridged Text | Cut along Dashed Square Borders
Unit 1: Introduction to Environmental Studies
1. Multidisciplinary Nature of Environmental Studies
Environmental Studies is inherently multidisciplinary because understanding environmental issues requires knowledge from a wide
Read MoreMiddle East Power Shifts and Egyptian Political History
Current Events and Contemporary Realities
For the most contemporary question, the strongest material is the fall of Assad and the Syrian transition (2024–2026), the single biggest recent shift in the regional order. In December 2024, after 54 years of Assad rule, the regime collapsed following a lightning offensive led by Hayat Tahrir al-Sham (HTS). Its leader, Ahmed al-Sharaa, now heads the Transitional Government and is trying to project moderation and pragmatism to gain international legitimacy,
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