The organ that living things such as fish use to extract dissolved oxygen from water are the gills. As land animals and humans don't have gills, we can't breath underwater and take in the oxygen from that source.
Answer: Biomes differ in the amount of precipitation they receive, their temperatures, and the life that inhabits each biome. ... Each biome is filled with organisms adapted to live in one of its ecosystems and each biome is determined by temperature and precipitation, accounting for differences between biomes.
The purpose of a cell wall within a plant cell is to provide the cells with protection and structure. It allows also allows the plant to grow tall and strong, cell walls act like a shield and a spine for a plant.
