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View Full Version : Why don't a cactus have a respiration system

sarangua97
Aug 28, 2012, 04:05 AM
Well all the other trees and plants have respiration system but why not cactus?
JudyKayTee
Aug 28, 2012, 06:37 AM
Well all the other trees and plants have respiration system but why not cactus?


This must be homework. Here's a good starting place:

Cactus - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Cactus)