Answer:
Source 1 explains a specific concern of urban agriculture. Source 2 makes a general statement about urban agriculture safety.
Explanation:
The two sources of information are referring to the same topic but from very different points of view, it seems to be that source 1 is against and source 2 is on favor of it, after comparing and contrasting it concludes that they are giving a negative reason why it shouldn't be happening (source 1) and given positive data of the real process (source 2)
