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 (C)</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 (D)</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 (D)</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 (B)</p> Signup and view all the answers

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

<p>Mercury (B)</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 (D)</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 (D)</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 (B)</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 (B)</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 (B)</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' (C)</p> Signup and view all the answers

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

<p>Through milk (D)</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 (C)</p> Signup and view all the answers

Why did the US government ban DDT production in 1972?

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

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

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

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

<p>Heart disease (C)</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 (C)</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 (B)</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 (A)</p> Signup and view all the answers

How does biomagnification impact the food chain?

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

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

<p>COVID-19 pandemic (A)</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 (C)</p> Signup and view all the answers

Which action is recommended for building a healthy environment?

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

What is the ultimate goal emphasized in the text?

<p>To ensure a sustainable environment (C)</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 (A)</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 (D)</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 (C)</p> Signup and view all the answers

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