Cells grown in a petri dish tend to divide until they form a thin layer covering the bottom of the dish. If cells are removed from the middle of the dish, the cells bordering the open space will begin dividing until they have filled the empty space. What does this experiment show?

Cells occupy space that have enough water and oxygen. When they move together this makes the chemical processes within the cell communicate easily. This is why some algae in the water tend to form in clumps because they are co-dependent with each other. When cells are grouped, water is more attracted within their cell walls allowing osmosis to occur. This allows multiple cells to thrive in their environment. But, when a piece or a chunk is removed, homeostasis within the group of cells become imbalance causing it do eventually die away.