Evolução?

Desculpem não ter posto o site de onde tirei a ultima tirinha! O site é http://www.google.com.br/imgres?imgurl=http://1.bp.blogspot.com/_EczUIN_cqL8/S7do5D6fITI/AAAAAAAAAGM/M6P9ashtzs4/s1600/Dia%2Bda%2Barvore-1.jpg&imgrefurl=http://escusavasdeveristo.blogspot.com/&usg=__hUZNkjUNo7sz7s4yKE7fbc7EjbE=&h=1071&w=1600&sz=221&hl=pt-BR&start=129&tbnid=8ttICj2w7s5orM:&tbnh=100&tbnw=149&prev=/images%3Fq%3Ddia%2Bda%2Barvore%26um%3D1%26hl%3Dpt-BR%26safe%3Dactive%26sa%3DN%26biw%3D1280%26bih%3D931%26tbs%3Disch:10,3500&um=1&itbs=1&iact=rc&dur=414&ei=pppVTNG4LYT68AbXu8SPBA&page=5&ndsp=31&ved=1t:429,r:29,s:129&tx=56&ty=76&biw=1280&bih=931