自然選擇

自 = 丶 + 目 : Mnemonic symbol: a hand mirror, which someone uses to look at themselves.

The Eye of Providence (目) is looking at itself (自) in a handheld mirror (自) in the space station's bathroom (Ø4). It think it's indeed looking very good, since Zorro (z) attached a petal (丶) to its eye (目).

然 = 灬 + 肰 : Robinson Crusoe is grilling some dog meat on his BBQ in the anthill's kitchen, but it's hard to do it correctly because of all the animal rights activists. They think it's not right to grill dog meat.

选 = 先 + 辶 : Xu Xian (xu) squired the FLOTUS (先) to go shopping, but inside of the anthill (an3) he soon regrets his decision as he has to help the FLOTUS select (选) one pair of gladiator sandals (辶) out of hundreds of similar looking pairs.

择 = 丨 + 又 + 扌 + 二 : Zorro (z) has to select (择) his new weapon between two terrible choices (择) in the elevator's kitchen (e2): there is either a boxing glove (又) or a dinosaur bone (丨). He has to select one using a toy claw (扌), but he has to choose wisely: one of the items is hooked to a charged capacitor (二) which will shock Zorro should he take the wrong choice (择).