Petroleum
Energy and Material conservation are not Possible without Water conservation.
Because energy mass conservation will not be satisfied in free space, so that this process needs some material by which this conversion will be proceed.
Aluminium is a good material in terms of conservation as it is easy to recycle, provided it can be separated from other trash.
you are bad
Becaues the world needs it
Supply economy
Supply economy
it has many uses: Light, comunication, conservation, transport, to make food and so on. Most technology needs electricity and is used every day.
Conservation of charge means that a net electric charge is not created or destroyed. This type of charge is instead transferred from one specific material to another.
Material.
adding value to raw materials which are scarce in most efficient and effective way to satisfy the needs of the customer
food,clothing and shelter are minimum material needs of man; sense of being;togetherness;individuality;awareness of higher self;prayer,god are spiritual needs.