Sorry, there are no such things as 'spirits', only our imagination and/or superstition.
Natural resources are the raw materials that are needed to live. They are raw materials for everything that is in the world today. Without natural resources, humans would not have a place to live, water to drink, or food.
Pure rock salt. Without any iodine in it. Another good, basic material is dirt. Spirits are repelled by earthly materials such as, rocks, salts, minerals, organic compounds (molecules including the element Carbon), and water. These materials are all earthly (some organic compounds ARE manufactured, beware of companies trying to sell you "natural" ghost repellents).
All the natural or artificial materials are formed from chemical elements, without any exception.
Natural gas is not renewable. The large deposits of natural gas have required millions of years to accumulate and would be difficult to reproduce without another several millions of years. The components of natural gas, primarily methane, can be produced by anaerobic digestion of organic materials such as plant waste, sewage or other materials. In this way fuel gas is renewable but natural gas is not.
Recycling uses existing materials to make new products. Reuse uses existing materials again without changing the products.
Lady Macbeth asks the spirits to fill her with cruelty, to make her remorseless and able to carry out the murder of King Duncan. She does this because she feels that she lacks the natural capacity for such ruthless actions and wants to be empowered to commit the deed without hesitation.
natural process is a process in whichit is naturally without any plan occured and the man made proceess is a process which is done by man.
Engineered materials can differ from natural materials in many ways. Engineered ones are made for specific purposes, some to have more tensile strenght like steel and kevlar, others to be more ductil like the elastomers, others to resist to higher temperatures like the ceramics on the space shuttle, others to conduct electricity like silicon based transistors, and so on. They also differ on composition. Engineered materials can be a mix of natural materials (and by this i mean that occur in the nature without human intervention) and man-made, or only man-made materials.
Natural materials are those that are utilised as found in nature, e.g. cotton. This is different to man made materials such as nylon or polyester that are created by a synthetic process although often utilising the worlds natural materials (for example plastics come from Oil etc)
My friends sister uses lemon juice to lighten her hair, that about as natural as your gonna get!
Materials that can be compressed or extended without breaking
Yes, because without frienship, there are no friends and without friends there is no friendship.