The gas that makes up almost ¼ of the air’s surrounding of the
earth is the oxygen. Earth atmosphere’s contains around 20.95%. Oxygen is a
chemical substance with a symbol of O and atomic number of 8. Oxygen is the gas
that we inhale and goes to our respiratory system. According to the latest
research, it is one of the most abundant gas in earth, it is on the third
place. Most organic molecule contains oxygen like proteins, carbohydrates, fats
and nucleic acid. Trees also produce oxygen and intake the carbon dioxide.
Answer:
Explanation:
Among the merits of federalism are that it promotes policy innovation and political participation and accommodates diversity of opinion. On the subject of policy innovation, Supreme Court Justice Louis Brandeis observed in 1932 that “a single courageous state may, if its citizens choose, serve as a laboratory; and try novel social and economic experiments without risk to the rest of the country.”
What Brandeis meant was that states could harness their constitutional authority to engage in policy innovations that might eventually be diffused to other states and at the national level. For example, a number of New Deal breakthroughs, such as child labor laws, were inspired by state policies. Prior to the passage of the Nineteenth Amendment, several states had already granted women the right to vote. California has led the way in establishing standards for fuel emissions and other environmental policies. Recently, the health insurance exchanges run by Connecticut, Kentucky, Rhode Island, and Washington have served as models for other states seeking to improve the performance of their exchanges.
