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.
Economics is the study of the forces of supply and the demands allocate deficient resources. Economics is divided into microeconomics and macroeconomics. Microeconomics is something doing with the behavior of firms, consumers, and also about the role played by the government. Macroeconomics is more to inflation, industrial production, unemployment and the role played by the government.