Biomagnification and the Trouble with Toxins

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Biology, Engineering, Performing Arts
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11th Grade - University
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the primary reason for the regulation of DDT in the 1970s?
It had negative environmental effects.
It was ineffective against pests.
It was banned worldwide.
It was too expensive to produce.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How did DDT affect bald eagles?
It made them immune to diseases.
It improved their hunting skills.
It caused thinning of their eggshells.
It increased their population.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is biomagnification?
The process of toxins becoming less concentrated in organisms.
The process of toxins becoming more concentrated in organisms as you move up the food chain.
The process of organisms adapting to toxins.
The process of energy being transferred between trophic levels.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do organisms at higher trophic levels have higher toxin concentrations?
They consume more biomass from lower levels.
They live longer than other organisms.
They are immune to toxins.
They produce toxins themselves.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a toxin that can be biomagnified?
Oxygen
Mercury
Carbon dioxide
Water
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What alternative solution is suggested for pest control instead of using chemical toxins?
Using more potent chemical pesticides
Introducing more predators
Using viruses to target specific pests
Increasing the use of DDT
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What additional challenges do animals like bald eagles face besides biomagnification?
Excessive rainfall
Overpopulation
Habitat destruction and poaching
Lack of food
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