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Pollution

Biology • Biodiversity & Human Impact • Knowledge-Based • 5 questions

Pollution Knowledge-Based Download PDF

Biology · Ecology · Biology · Biodiversity & Human Impact

5 Biology practice questions on Pollution. Questions that assess core concepts and understanding.

Questions

  1. 1.

    Which ecological consequence occurs in an aquatic ecosystem as a direct physical and physiological result of thermal pollution?

    • A) An immediate surge in water alkalinity caused by the chemical loss of dissolved carbon dioxide
    • B) A marked reduction in sunlight penetration caused by elevated turbidity from suspended sediments
    • C) A decrease in dissolved oxygen concentration coupled with an increase in the metabolic rates of ectotherms
    • D) A dramatic proliferation of submerged macrophytes driven by enhanced biological nitrogen fixation
  2. 2.

    Which atmospheric substance is categorized as a secondary air pollutant that damages plant tissues and reduces biodiversity, forming in the troposphere when primary emissions react in the presence of sunlight?

    • A) Carbon monoxide
    • B) Ground-level ozone
    • C) Sulfur dioxide
    • D) Nitric oxide
  3. 3.

    Which ecological impact on soil chemistry is directly caused by chronic acid precipitation in forest ecosystems?

    • A) Enhanced retention of essential micronutrients due to increased soil cation-exchange capacity
    • B) Accelerated decomposition rates of organic matter driven by stimulated bacterial activity
    • C) Increased availability of dissolved phosphates caused by the neutralization of soil pH
    • D) Depletion of essential nutrient cations and the mobilization of phytotoxic aluminum ions
  4. 4.

    Which process directly causes the depletion of dissolved oxygen in an aquatic ecosystem following an algal bloom triggered by agricultural nutrient runoff?

    • A) Aerobic decomposition of dead algal biomass by bacterial decomposers
    • B) Inhibition of cellular respiration in submerged plants due to elevated pH levels
    • C) Direct chemical oxidation of excess dissolved inorganic phosphates by molecular oxygen
    • D) Net consumption of dissolved oxygen by living surface algae through daytime photosynthesis
  5. 5.

    Which process describes the progressive increase in the concentration of persistent, fat-soluble pollutants in the tissues of organisms at successively higher trophic levels of a food chain?

    • A) Biomagnification
    • B) Bioaccumulation
    • C) Eutrophication
    • D) Bioremediation