Exploring Energy Flow Concepts

What is the primary focus of this video?

• Nitrogen cycle

• Carbon cycle

• Water cycle

• Energy flow in ecosystems

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In an energy pyramid, which level contains the autotrophs?

• Primary consumers

• Secondary consumers

• Producers

• Tertiary consumers

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What does the 10% rule state?

• 10% of organisms survive

• 10% of biomass is consumed

• 10% of energy is passed between trophic levels

• 10% of energy is lost as heat

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Why don't ecosystems typically have more than four or five trophic levels?

• Predator competition

• Lack of space

• Insufficient energy

• Climate conditions

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What is carrying capacity?

• The minimum population an ecosystem can support

• The average population an ecosystem can support

• The maximum population an ecosystem can support

• The ideal population an ecosystem can support

What happens to the deer population when they overconsume plants?

• It increases exponentially

• It remains stable

• It migrates

• It decreases

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Which of the following is NOT a limiting factor?

• Sunlight

• Water

• Shelter

• Food

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What is biomagnification?

• Accumulation of toxins at higher trophic levels

• Reduction of population at higher trophic levels

• Decrease in energy at higher trophic levels

• Increase in biomass at higher trophic levels

Why do organisms at higher trophic levels contain more toxins?

• They have longer lifespans

• They consume multiple organisms from lower levels

• They are exposed to more sunlight

• They produce toxins

Which organism in the example provided would have the highest toxin accumulation?

• Producers

• Primary consumers

• Secondary consumers

• Tertiary consumers

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