International Journal of Multi-Disciplinary Research and Developmental Studies
E-ISSN: 2469-7811 • Impact Factor - 9.587

ENVIRONMENTAL POLLUTANTS-EFFECT ON PLANTS AND ANIMALS

Abstract

Environmental pollutants—such as sulfur dioxide, nitrogen oxides, ground-level ozone, acid rain, and heavy metals—severely damage the physiological, morphological, and reproductive health of both plants and animals. [1, 2] Effects on Plants • Photosynthesis and Gas Exchange: Pollutants clog or shrink stomata (leaf pores), which blocks carbon dioxide uptake and slows down photosynthesis. [1, 2] • Leaf Damage and Chlorosis: Ground-level ozone and acidic gases cause yellowing (chlorosis), tissue death (necrosis), and early leaf drop. [1, 2] • Root and Nutrient Impairment: Acid rain and soil pollution leach out essential nutrients while releasing toxic aluminum ions that damage root structures. [1, 2] • Stunted Growth and Crop Loss: Oxidative stress damages plant cells and DNA, resulting in reduced agricultural yields for staples like wheat and soybeans. [1, 2] • Species Imbalance: Excess nitrogen deposition favors fast-growing, tolerant weeds and mosses while choking out sensitive native plants, lichens, and fungi Effects on Animals • Respiratory and Organ Damage: Airborne particulates and toxic gases (like carbon monoxide and ammonia) irritate respiratory tracts, cause lung stress, and lead to organ damage. [1, 2, 3] • Reproductive Failure and Endocrine Disruption: Chemical pollutants and pesticides act as endocrine disruptors, altering mating habits, lowering fertility rates, and causing birth defects. [1, 2, 3] • Aquatic Ecosystem Collapse: Acid rain and heavy metal runoff lower water pH and introduce toxic aluminum, killing fish, amphibians, and aquatic invertebrates. [1, 2] • Bioaccumulation: Persistent toxins (such as mercury, lead, and organochlorines like DDT) build up through the food chain, causing neurological disorders and death in top predators. [1, 2, 3] • Habitat Destruction and Plastic Ingestion: Land and marine pollution (especially plastics) cause physical blockages, starvation, and large-scale biodiversity loss.

Keywords: environment, pollutants, plants, animals, effect, health

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