Support, protection, movement, mineral homeostasis, blood cell production and storage.
They do not influence the salinity level in their environment, they maintain the salinity in their body. If they don't, osmosis will cause their cells to shrink due to the fact that the salinity in the cell is lower than outside the cell. This will make water leave the cells. So they need to get rid of excess salt all the time. Freshwater fish need to retain the salt in their bodies, otherwise the opposite will happen. Salinity level in the cell is higher than outside the cell and this causes influx of water which will make the cell build up turgor pressure. Ultimately they will explode. So fishes in both environments adapted to deal with osmosis.
The place where an organism lives
answer: speeds up chemical reactions
explanation:
an enzyme is a protein that speeds up biological processes I.e chemical processes in the cells it functions as a biological catalyst. They are reaction specific that is, each reaction has different enzymes
