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B
fat for additional insulation
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C
long necks
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D
long eye lashes
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Solution
The correct option is B fat for additional insulation
Animals that live in colder areas have to protect their bodies against extremely cold environmental conditions.
Their bodies cannot withstand such cold climates.
So, they have a thick layer of fat beneath their skin as insulation and thick white fur over their bodies. This provides an additional layer over their skin.
As a result, the air gets trapped in this layer and it cannot pass through it, keeping their bodies insulated against the excessive cold.
So, option B " fat for additional insulation" is the correct answer.