what can a cactus stem store?
hydrogen CO2 h2o H20 O2 liquid gold thorns rain
A B C D E F G H
H2O is the scientific name for water.
a cactus stem is used for storing h2o
what can a cactus stem store? (A) hydrogen (B) CO2 (C) h2o (D) H20 (E) O2 (F) liquid gold (G) thorns (H) rain