For instance I had pancakes for breakfast this morning. The eggs were from non-native chickens, the milk from non-native cows, the flour from non-native wheat, the canola oil I cooked it in from non-native rapeseed, and the butter I put on it from non-native cows. However all is not lost, I used maple syrup from native maple trees, and put blackberries in it that might have been native. (The baking powder and salt are chemicals that to the best of my knowledge do not come from animals or plants, native or otherwise.)
Edit: When I looked up blackberries I found out that there are several hundred species, and some of the popular ones for cultivation are not native. So I don't know whether that was a native berry.
My ancestors managed to create arguably the best bee btw :) [http://www.wordiq.com/definition/Apis_mellifera_carnica]