Do ecosystems always stay the same? Explain

No ecosystems do not stay the same because an ecosystem consists of plants groups of animals and land formations it’s always changing animals get their source of energy and protein by devouring other animals and the land is alway reshaping itself and rocks wither away grass grows

Cells have such a small size for their own benefit, they are small in size to allow nutrients and other materials to diffuse through the cell membrane, they keep a small ratio of surface area to volume