現在分詞、過去分詞、動名詞

Freezing technology that truly preserves the quality of fresh fish is relatively new. Developed by the Japanese fishing industry in the 1990's to preserve the catch on long trips,"superfreezing" can reduce the core temperature of a 500-pound tuna to minus 70 degrees in about a day and a half. Packed in artificial snow ground from dry ice and surrounded by liquid nitrogen, that fish can be preserved in good condition for as long as two years. "It's an amazing product," said a restaurant owner who recently bought a medical freezer, [transplant / store / designed /to / organs], to keep tuna in his restaurant's basement.
[2005 東京理科大]

１．[　]内を並べかえて、意味の通る文にしなさい。

２．Freezing、fishing、superfreezing、amazing、それぞれ文法的に説明しなさい。

３．Developed、Packed、surrounded、preserved、designedはすべて過去分詞。ここでの使われ方について説明しなさい。

４．Packed in artificial snow ground from dry iceのgroundについて文法的に説明しなさい。

５．内容から考えて（といっても理系の人にとっては常識だと思うが）liquid nitrogenは日本語で何ですか。