Most people can survive only a few days without what?
h2o urea CO2 beds houses air NaCl H20
A B C D E F G H
H20 Bottled water was generally consumed last year.
Most people can survive only a few days without H20.
Most people can survive only a few days without what? (A) h2o (B) urea (C) CO2 (D) beds (E) houses (F) air (G) NaCl (H) H20