Devices also allow kids to easily access education material, which could be beneficial to them in the long term learning process. This is 2018, no child should have to walk to a library for God’s sake. (I do lol)
A prepositional phrase, as the name itself suggests, has to do with prepositions. So it is a phrase which starts with a preposition, and includes one, or more words after it.
In this case, the prepositional phrase is of dried meat, vegetables, and flour. The phrase acts as an adjective - what kind of supplies? (Those) of dried meat...
Animals and human interaction for the most part
