Step $1$

a$.$ Scales

goto $\backslash (2-1=\backslash )$

B$.$ No scales

goto $4$

Step $2$

a$.$ Legs

$90103$

b$.$ No legs

snake

Step$-3$

a Shell tortaise

b$.$ No shell lizard

Step $4$

a$.$ Backbone bat

b$.$ No backbone gotos

Step $5$

a$.8$ legs spider

b$.6$ legs ant

$3.$ Explore what is wrong with the dichotomous key above, and suggest how to correct the key? $(\backslash (2\backslash$mathrm$\{$~T$\},20\backslash )$