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.
The definition of aggregate is a fruit or flower that has many similar parts or clusters that form it. An example of an aggregate fruit is the blackberry. The definition of aggregate is a whole or total amount of something. An example of the adjective aggregate would be to describe the total amount of cars sold by a sales team in one month.