The best description about the brain stem is: it is the most important organ of our body's survival. It connects the brain and the spinal cord, controls the vital organs like the lungs and heart and it also coordinates the many essential body reflexes.
Hypertonic is where the solution has a lower water potential than the other side of the membrane. It has less water molecules and osmosis may occur under that in the presence of semi permeable membrane. Where water will flow from a higher water potential to lower water potential region
The main characteristic that differs the kingdom Fungi from all other kingdoms is the presence of cell wall made of chitin. Kingdom Animalia has no cell wall, while plants, bacteria, and some protists have cell walls but made of different polymers. The members of the kingdom do not photosynthesise and they are heterotrophs, like animals. The kingdom of fungi includes yeast, mold, mildew, and mushrooms and all of those groups are heterotrophs and have chitin cell wall. Yeasts are unicellular fungi, while molds, mildew (which are certain kind of molds), and mushrooms are multicellular fungi,
In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research.
