recycling is the process of converting waste materials into new materials and objects. it is an alternative to "conventional" waste disposal that can save material and lower greenhouse gas emissions.
interferons play an important role as the first line of defense against infections. ifns are part of the non-specific immune system. all types of interferons increase the expression of class i mhc molecules and gamma interferons increase the expression of class ii mhc molecules.
weathering is the name given to the process by which rocks are broken down to form soils
the source: soils.
process by which wastes are converted into new products and materials