Which two species in this table are most similar to eachother

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)

What is the correct term for living the most sustainable life you can within your current circumstances?