What is the answer to this? there can be more than 1 answer ​

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?

Which description best characterizes the motion of particles in a solid?

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world