Answer:
flood control dams split and maybe barriers
to leave their wavelengths unchanged
The spinal fluid is actually called cerebrospinal fluid(CSF). It's job is to pretty much protect the brain and spine. It also soaks them in nutrients and gets rid of waste products from the spine and brain.
Answer: The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.