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ANSWERS
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The
Silence of the Birds
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1. |
The birds evolved in the absence of predators and therefore
evolved no escape or defense mechanisms, such as flight
or fear.
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2. |
C
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Green
Invader
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3. |
Fragments from one plant can quickly grow into new ones;
No natural predators;
Built-in toxins ward off any new predators;
It blocks sunlight, killing its competition.
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4. |
Transporting fragments on ships' anchors and fishing
nets;
Accidental release from private and public aquariums.
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5. |
B
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The
Silken Tree Eaters
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6. |
A
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7. |
Introduced
parasitic flies turned out to prefer native caterpillars
to gypsy moth caterpillars, destroying native moth populations
while having little affect on the gypsy moth.
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Dust
Busting
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8. |
D
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9. |
Clearing of land for farming.
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10. |
Increased incidence of asthma in Caribbean people.
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