The lowest level of organization in a multicellular organism​

Lower levels of organization in multicellular organisms are cells, tissues and organs. These are followed by organ system and finally organisms. These levels are absent in unicellular organisms as they have only one cell and therefore no tissue and further levels.

the main thing i would use is bricks because if there is a hurricane, there is a great possibility for the house to still stand. and i would also use plexiglass windows instead of regular windows because plexiglass isn't prone to breaking.