Harmful Substances in Food Chains

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Questions and Answers

Which of the following statements is true about harmful substances in food chains?

  • They have no impact on living things
  • They only affect the top predators in food chains
  • They can damage living things in food chains (correct)
  • They can only damage plants

What is the potential impact of harmful substances in food chains?

  • They have no impact on living things
  • They can only affect the top predators in the food chain
  • They can disrupt the entire food chain (correct)
  • They can only affect the plants in the food chain

What can harmful substances do to living things in food chains?

  • Enhance their growth
  • Protect them from predators
  • Damage them (correct)
  • Have no effect on them

What is the primary transfer mechanism for harmful substances in food chains?

<p>Absorption (A)</p> Signup and view all the answers

Which of the following moves through food chains instead of energy?

<p>Harmful substances (C)</p> Signup and view all the answers

What do harmful substances do as they move through food chains?

<p>Accumulate in organisms (D)</p> Signup and view all the answers

Flashcards

Impact of Harmful Substances

Harmful substances can cause damage to living things within food chains.

Food Chain Disruption

Harmful substances can disrupt the delicate balance and stability of the entire food chain, affecting multiple species.

Transfer Mechanism

Harmful substances primarily transfer in food chains through absorption by organisms.

Harmful Substance Accumulation

Harmful substances, unlike energy, move through food chains and accumulate in organisms.

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Bioaccumulation

Harmful substances accumulate in organisms as they move up the food chain, increasing in concentration.

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Study Notes

Harmful Substances in Food Chains

  • Harmful substances, such as pesticides, can accumulate in the bodies of living organisms in a food chain, causing harm to the entire ecosystem.
  • The potential impact of harmful substances in food chains is bioaccumulation, biomagnification, and eventually, harm to humans and the environment.
  • Harmful substances can alter the growth, development, and reproduction of living things in food chains, and even cause death.

Transfer Mechanism and Movement

  • The primary transfer mechanism for harmful substances in food chains is through consumption, where one organism eats another, transferring the harmful substances up the food chain.
  • Harmful substances, not energy, move through food chains, accumulating in higher trophic levels.
  • As they move through food chains, harmful substances increase in concentration, causing greater harm to organisms at higher trophic levels.

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