They are both suitable questions, just phrased incorrectly. The first question should read, 1. 'How has your life style changed since you came to Canada?' or even better 'How has your life style changed since you arrived in Canada?' 2. What are some of the differences between when you were in your own country, and now? I hope that helps

Sorry, neither is actually correct. These are a bit better: 1.How has your life style changed since you came to Canada? 2.What are the differences between when you were in your country and now? 1. Is a bit more more specific. 2 is very general - perhaps too general? But if you wanted to ask a question that lets someone answer as they want to answer, then that might be a better option.

The first does a better job of being specific about what is being asked. It would sound more nature if it was reworded like this: 'How has your lifestyle changed since you came to Canada?' The second options should be reworded a bit, too: 'What are the differences between what you were like in your country and now?' This question is a bit more general and might get wider variety of answers than specifically asking about lifestyle changes. I like the first option better, but it depends on if you want to ask about lifestyle differences or not. Blessings