At its simplest, biotechnology is technology based on biology - biotechnology harnesses cellular and biomolecular processes to develop technologies and products that help improve our lives and the health of our planet.
In macroeconomics, the focus is on the demand and supply of all goods and services produced by an economy. Accordingly, the demand for all individual goods and services is also combined and referred to as aggregate demand.
Economic Analysis. The application of data to a theory of how people produce, trade, and use goods and services. One may use both qualitative and quantitative tools in economic analysis. For example, given a theory of what causes unemployment, an economic analyst may take the data in an attempt to find its true causes and compare them to the original theory.