Question

 Why do cacti have spikes?

Answer it is to protect them.
http://wiki.answers.com/Q/Why_do_cacti_have_spikes

Top Q&A For: Why do cacti have spikes

What are the spikes on the cacti used for?

The spikes of a cactus prevents a herbivore from eating it as well prevents water loss through transpiration.
http://wiki.answers.com/Q/What_are_the_spikes_on_the_cacti_used_for

Difference between Jobe's fruit tree spikes& evergreen spikes?

Jobe's Fruit & Citrus Tree fertilizer spikes and Jobe's Evergreen fertilizer spikes are manufactured by the Easy Gardener Co. to help gardeners easily match the fertilizer needs of different types ... Read More »
http://www.answerbag.com/q_view/1931642

Why does my girlfriend's vagina have sharp spikes in it.?

Dude, whatever you're on... I want some of it too...
http://answers.yahoo.com//question/index?qid=20120828223927AA1eotF

List of Reptiles that have Spikes on their Tails?

Reptiles developed millions of years ago and often retain the superficial appearance of their ancestral dinosaur heritage. While dinosaurs had spiked tails for defense, modern reptiles have spiny t... Read More »
http://www.ehow.com/list_6809045_list-reptiles-spikes-tails.html


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