Which of the two glasses the ingredients this all completely class/sand or sugar

Why are people not able to scuba dive in the deep part of the ocean

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

What is the correct name for the compound cocl3? a) cobalt(i) chloride b) cobalt(i) chlorate c) cobalt(ii) chlorate d) cobalt(iii) chloride