------ Respiration is the use of oxygen to produce energy. Oxygen, or , is also created as a by-product of photosynthesis during the light-dependent reactions. The photolysis, or breaking down of water, H2O, during photosynthesis, created oxygen as a by-product.
the welfare state is European in origin because its birth is commonly dated to late 19th ... market and life cycle) risks and how much their Robin Hoods redistribute income.
