Answer:
I have cities but no houses I have mountains but no trees I have water but no fish. What am I?
I am always hungry I must always be fed. The finger I lick will soon turn red.
A little pool with two layers of wall around it. One white and soft and the other dark and hard, amidst a light brown grassy lawn with an outline of a green grass. What am I?
I am a word of letters three. Add two and fewer there will be. What word am I?
Good memory, skin like the sea. A great beast I am, yet vermin frightens me. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.