颗

颗 = 果 + 页 : Karl Marx (k) is eating grapes (果) in front of the elevator (e1). He doesn't care that there are kernels (颗) inside: He just spits them on a sheet of paper (页) to throw them away later.

果 = 木 + 田 : Gitta Giraffe (gu) is not feeling well inside observatory (o3) and decides to eat healthy. To plant a field (田), she first distributes Christmas trees (木) as manure, then puts a field on it and finally plants grapevines. Soon she will be eating grapes (果) and feel better.

页 = 丆 + 贝 : mnemonic symbol: a sheet of paper.

页 = 丆 + 贝 : It's just too hot in Greece for the crab, so it wants to return to the ocean. Inside of the elevator's bathroom, Maud Younger helps it to do so. The plan is to just flush it down the toilet. The toilet is operated with the help of wind power, but there's no wind today. Maud Younger makes short work, grabs to sheets of paper and waves them towards the wind wheel until it turns really quickly. Finally the crab can return home.