Acid deposition effects

Acid deposition effects

• A. Acidification of soil and water, damage to plants, man-made structures, decrease biodiversity
• B. Increased soil alkalinity
• C. Enhanced crop yields
• D. No effect on ecosystems

Answer: (A)

Acid deposition lowers the pH of soils and water, which starts a chain reaction that disrupts nutrient availability and harms living systems. When acids rain down, hydrogen ions replace essential nutrients like calcium and magnesium in the soil, causing those nutrients to leach away and leaving plants with weaker nutrition. In streams and lakes, the extra acidity lowers pH, stresses aquatic organisms, and can release toxic metals such as aluminum that further harm fish and other wildlife. Plants themselves can experience reduced nutrient uptake, leaf damage, and increased susceptibility to disease and drought because their overall access to essential elements is compromised. The combination of stressed plants, disrupted aquatic ecosystems, and increased weathering of materials leads to decreased biodiversity and ecosystem health. The same acidic reactions also corrode limestone, marble, and metals, contributing to damage of man-made structures and monuments. Other choices describe the opposite or unlikely outcomes: increasing soil alkalinity is the opposite of what acid deposition causes; giving enhanced crop yields is not supported by the known stress and nutrient disruption; and saying there’s no effect on ecosystems ignores the well-documented ecosystem changes that occur with acidification.

Acid deposition lowers the pH of soils and water, which starts a chain reaction that disrupts nutrient availability and harms living systems. When acids rain down, hydrogen ions replace essential nutrients like calcium and magnesium in the soil, causing those nutrients to leach away and leaving plants with weaker nutrition. In streams and lakes, the extra acidity lowers pH, stresses aquatic organisms, and can release toxic metals such as aluminum that further harm fish and other wildlife. Plants themselves can experience reduced nutrient uptake, leaf damage, and increased susceptibility to disease and drought because their overall access to essential elements is compromised. The combination of stressed plants, disrupted aquatic ecosystems, and increased weathering of materials leads to decreased biodiversity and ecosystem health. The same acidic reactions also corrode limestone, marble, and metals, contributing to damage of man-made structures and monuments.

Other choices describe the opposite or unlikely outcomes: increasing soil alkalinity is the opposite of what acid deposition causes; giving enhanced crop yields is not supported by the known stress and nutrient disruption; and saying there’s no effect on ecosystems ignores the well-documented ecosystem changes that occur with acidification.