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15
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What are TWO harmful man-made changes to ecosystems?
Starting fires, Causing deforestation, Draining water, Exploiting resources, Dumping illegally
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5
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What are fossils?
remaining parts of a dead living creature that can be thousands or millions of years old.
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boom
Lose 50 points!
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magnet
Take 5 points!
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gift
Win 25 points!
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thief
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10
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What is the difference between a change in seasons and an ecosystem changing over time?
Ecosystems change in a repeating cycle of seasons, but sometimes grow and change in different ways too
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15
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How has human population growth affected biodiversity?
It has accelerated the natural cycle of species substitution
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lifesaver
Give 25 points!
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seesaw
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fairy
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lifesaver
Give 25 points!
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15
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What is ecological balance?
there is little change in an ecosystem over the years because it balances and stays stable
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15
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What are TWO helpful man-made changes to ecosystems?
Conserving natural habitats, Protecting species, Reforestation, Controlling rubbish, Recycling
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10
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What is extinction?
when a species that lived on earth disappears.
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baam
Lose 15 points!
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gift
Win 25 points!
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gift
Win 20 points!
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lifesaver
Give 25 points!
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