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15
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Why do we use a food web instead of a food chain in ecosystems?
To simplify the ecosystem
To understand all the feeding relationships
To show only one set of feeding relationships
To focus on a single organism
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15
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Why are primary consumers essential in a food chain?
Because they are producers
Because they eat several types of plants
Because they eat only meat
Because they are predators
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15
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Why are grasses considered producers in a food chain?
Because they are secondary consumers
Because they eat other organisms
Because they are carnivores
Because they make their own food
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15
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How do changes in an ecosystem due to human activities impact wildlife?
They have no impact on wildlife
They can lead to loss of habitats and food sources
They provide more habitats for wildlife
They always benefit wildlife
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15
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What is the role of primary consumers in an ecosystem?
To produce energy through photosynthesis
To produce energy through photosynthesis
To consume producers
To release minerals into the soil
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15
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Where does all the energy in an ecosystem originate from?
The Sun
Plants
The Moon
Animals
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What is the main source of toxins entering ecosystems?
Natural geological processes
Chemicals used in industry and agriculture
Biological interactions among organisms
Atmospheric pollution
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thief
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25
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rocket
Go to first place!
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gift
Win 10 points!
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banana
Go to last place!
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baam
Lose 20 points!
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star
Double points!
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fairy
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25
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baam
Lose 10 points!
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15
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How does energy move through ecosystems?
It is transferred through food chains and webs
It is created by secondary consumers
It is generated by decomposers
It is produced by photosynthesis
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15
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What is the main purpose of a food chain in an ecosystem?
To predict the weather patterns
To determine the population size of organisms
To show where living things get their food
To analyze geographical features
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15
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What is the long-term impact of toxins on ecosystems?
Improved ecological balance
Stabilization of food webs
Enhanced biodiversity
Harm to ecosystem health and inhabitants
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How do toxins affect living organisms in ecosystems?
They enhance reproductive success
They can harm or kill living things
They provide essential nutrients for growth
They have no impact on organisms
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heart
Other team wins 15 points!
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magnet
Take 20 points!
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gift
Win 5 points!
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lifesaver
Give 25 points!
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What are toxins?
Poisonous substances that can harm or kill living things
Beneficial substances for ecosystems
Harmful chemicals used in agriculture
Nutrients essential for plant growth
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What can happen when new plants or animals arrive in an ecosystem?
They always benefit native species
They lead to competition for resources among native species
They lead to cooperation among native species
They have no impact on native species
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