A tissue is a group of cells that have a similar structure and work together to have the same function. These groups of cells make up organs such as lungs, heart, skin or brain.<u> So it is an organisational level between cells and a complete organ</u> because it ensembles similar cells and their extracellular matrix. To fully understand this, we have to consider that a cell is the smallest structural and functional unit of all organisms. So when they are aggregated together, they form tissues.
I would convince someone by telling them if you throw away that cardboard then in the near future you will be breathing automated air, so recycle that cardboard bro.
