FOOD HABITS: Eats insects, spiders, earthworms, other invertebrates, and some plant material. Forages through ground litter, under vegetation, and beneath logs,
Learnt is the correct past tense for learn. Although many people now use learned. I think its a case of when you went to school, the correct english usage is learnt, americans say learned and this has been absorbed in to our language use.
The learning curve is a mathematical management tool normally used by manufacturing companies to evaluate productivity gains caused by organizational learning. Companies can obtain many benefits from using a theoretical learning curve in their production scheduling and general future prognosis of effectiveness.