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The spines of the cactus are actually their leaves. They are so sharp and prickly to reduce the amount of surface area so they don't lose too much water in their native arid climates.

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Wiki User

15y ago
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AnswerBot

6mo ago

Cactus have prickles, sharp spines, or tiny hairs on their surface as a defense mechanism to protect themselves from animals that may try to eat them. These prickles also help cacti to reduce water loss by providing shade and trapping moisture around the plant.

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Wiki User

15y ago

There are many theories around this, but it is probably for protection.

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Anonymous

Lvl 1
4y ago

Ffdnf fish and chips for the week of the day is good for you and I will be there at least fish cxhegnhd get

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Anonymous

Lvl 1
4y ago

Why are cacti prickly

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Anonymous

Lvl 1
4y ago

Egfsbcth

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Q: Why are cactus prickly?
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