Oxygen keeps a plant s roots healthy and allows the plant to take up nutrient. Oxygen is the key to growth rate. Without oxygen around the roots, the roots will rot and die. You cannot grow in water, unless you dissolve oxygen in it.
The term federalism is also used to describe a system of government in which sovereignty is constitutionally divided between a central governing authority and constituent political units (such as states or provinces).ederalism is a system based upon democratic rules and institutions in which the power to govern is shared between national and provincial/state governments, creating what is often called a federation.
Political scientists study the uses of power, including how power is distributed within a state. The amount of power held by the central government determines the system of government a state has. There are three main systems of government used today: unitary systems, federal systems, and confederate systems.