Acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. acod rain is and example of

Acid rain is a type of precipitation with acidic components which is harmful to the environment, plants, animal and human beings.  There are not only natural sources that produce gases to the atmosphere like, volcanoes, but also the intense human activity that released a great amount of chemicals into the air. Some examples of this are: means of transport, power plants, electricity generation and factories.

in griswold v. connecticut (1965), the supreme court ruled that a state's ban on the use of contraceptives violated the right to marital privacy.

social contract theory basically says that all individuals are born equal, and provided a god given right to consent to be governed. american government is based of this

thomas hobbes and john locke said that we are selfish, individualistic, and constantly at war with each other, therefore we need to be controlled. 

government is defined as the legitimate use of force to control human behavior within territorial boundaries, here comes in hobbes and locke.

hobbes takes the part about controlling human behavior. while locke takes the part of legitimate use of force, since force is not legitimate unless there is consent of the people. 

there are basically 3 goals of the government: 1) maintain order by protecting life and property. 2) providing public goods, those which are typically not provided by the public sector, such as roads and education. 3) promote equality be it political, opportunist or outcome equality.