Environmental Studies AECC Model MCQ Questions

Environmental Concepts

• Eutrophication is a process where a body of water becomes enriched with excess nutrients, leading to an overgrowth of algae and depleting the oxygen in the water.
• Biochemical oxygen demand (BOD) is a measure of the amount of oxygen required by microorganisms to break down organic matter in water, indicating the level of water pollution.
• The main components of photochemical smog are volatile organic compounds, nitrogen oxides, and ozone, which react in the presence of sunlight to form a harmful mixture of air pollutants.
• Deforestation generally decreases biodiversity, as it leads to the destruction of habitats and the loss of ecosystems, resulting in a decline in the variety of plant and animal species.
• Alpha diversity refers to the diversity of species within a specific geographic area or ecosystem, measuring the variety of species present in a particular habitat or community.