How to answer "motivation for job change" on job application?

One can answer that the motivation for a new job is for a new challenge and would be for continuing growth and learning in the new job which means a career growth. Hope this answer would then be of help.

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explanation: because you need to reduce the pollution on land,the exhaust fumes will stop,and stop it in water,the oil that is in the oceanharms the fish   sorry if you   have been waiting long