Environmental Impact of Illegal Dumping and Ocean Mining
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Questions and Answers

What is the main result of bioaccumulation in the context of biomagnification?

  • Increased concentration of toxic substances in organisms (correct)
  • Balanced concentration of toxic substances in organisms
  • No change in the concentration of toxic substances
  • Decreased concentration of toxic substances in organisms

    • How does the level of toxicity change from lower trophic levels to higher trophic levels in the food chain due to biomagnification?

  • Remains constant
  • Fluctuates randomly
  • Increases (correct)
  • Decreases

    • What are persistent organic pollutants (POPs) in the context of biomagnification?

  • Naturally occurring substances in ecosystems
  • Harmless substances with no impact on organisms
  • Beneficial compounds found in the environment
  • Human-made toxic exhaust substances (correct)

    • Which term describes the gradual increase of toxic substances from the base to top predators via the food chain?

    <p>Biomagnification</p> Signup and view all the answers

    What term is used to explain the consistent rise of thermodynamics disturbance in the environment due to certain chemicals?

    <p>Bioaccumulation</p> Signup and view all the answers

    Why do ecotoxic substances like persistent organic pollutants (POPs) contribute to biomagnification?

    <p>Being lipophilic and non-degradable, they accumulate in organisms</p> Signup and view all the answers

    What is the primary reason for the proliferation of poisonous materials with the rise of trophic levels?

    <p>Accidental leaks from industrial activities</p> Signup and view all the answers

    Which of the following is NOT mentioned as a chlorinated hydrocarbon that contributes to biomagnification?

    <p>Mercury</p> Signup and view all the answers

    What significant event occurred in New Zealand on October 11, 2011, that is mentioned as a cause of aquatic and terrestrial organisms dying?

    <p>Oil spill from container ship Rena</p> Signup and view all the answers

    Why are chlorinated hydrocarbons like DDT concerning in terms of biomagnification?

    <p>They persist in the environment and are hard to break down</p> Signup and view all the answers

    Which of the following does NOT contribute to the primary reasons for biomagnification as mentioned in the text?

    <p>Proper disposal of chemicals by industries</p> Signup and view all the answers

    How do oil spills contribute to biomagnification according to the text?

    <p>By causing the death of aquatic and terrestrial organisms</p> Signup and view all the answers

    What is a primary cause of biomagnification according to the text?

    <p>Excessive dumping of plastic in aquatic areas</p> Signup and view all the answers

    How does Selenium contribute to the harm caused to marine animals?

    <p>It is a hyperaccumulation substance that leads to 'blind staggers'</p> Signup and view all the answers

    What is the main way toxins are transferred from mother orcas to their offspring?

    <p>Through milk</p> Signup and view all the answers

    What effect does the overgrowth of algae and microbes have on water?

    <p>Blocks sunlight from reaching deeper water layers</p> Signup and view all the answers

    Why did the US government ban DDT production in 1972?

    <p>To prevent biomagnification</p> Signup and view all the answers

    Which activity contributes to excessive deposition of sewage, agricultural, and industrial waste?

    <p>Water pollution</p> Signup and view all the answers

    What is a common health issue caused by biomagnification in humans?

    <p>Heart disease</p> Signup and view all the answers

    Why is plastic considered harmful for the environment in terms of biomagnification?

    <p>Plastic can biomagnify harmful chemicals</p> Signup and view all the answers

    What role do nitrate and phosphorus play in the process of algal bloom?

    <p>They stimulate the overgrowth of algae and microbes</p> Signup and view all the answers

    Why are humans particularly affected by biomagnification?

    <p>Being at a high trophic level in the food chain</p> Signup and view all the answers

    How does biomagnification impact the food chain?

    <p>It disrupts the food chain</p> Signup and view all the answers

    What is the most common example of biomagnification mentioned in the text?

    <p>COVID-19 pandemic</p> Signup and view all the answers

    What is the main concern expressed in the text?

    <p>The persistence of banned chemicals in the environment</p> Signup and view all the answers

    Which action is recommended for building a healthy environment?

    <p>Add water purifiers continuously to water bodies</p> Signup and view all the answers

    What is the ultimate goal emphasized in the text?

    <p>To ensure a sustainable environment</p> Signup and view all the answers

    Which statement aligns with Henry David Thoreau's perspective mentioned in the text?

    <p>Humans should prioritize preserving life over destruction</p> Signup and view all the answers

    What is a recommended way to decrease environmental pollution according to the text?

    <p>Limit the production and use of harmful products</p> Signup and view all the answers

    How can the system be protected from collapse, as stated in the text?

    <p>Maintaining a balanced food chain</p> Signup and view all the answers

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