Which of the following is an oxidation-reduction reaction? SO2(g) H2O(l) Right arrow. H2SO3(aq) CaCO3(s) Right arrow. CaO(s) CO2(g) Ca(OH)2(s) H2CO3(l) Right arrow. CaCO3(aq) 2H2O(l) C6H12O6(s) 6O2(g) Right arrow. 6CO2(g) 6H2O(l).

its first and third is your answer i did the qustion the fourth isnt right

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.