Answer:1.business cycles 2. an economy's growth rate 3. less 4. aggregate demand-aggregate supply model
Explanation:
One branch of macroeconomics focuses on long-run growth and development, while the other branch focuses on___business cycles_______which are fluctuations in__an economy's growth rate______typically over time periods of five years_ less___ .One model that macro economists use to study these fluctuations, which are called recessions and expansions, is the aggregate demand-aggregate supply__model.
Macroeconomics is defined as that branch of economics which studies the behavior, performance and changes of economic situations as a whole considering the factors of general price level, technology, output, consumption, aggregate demand and supply, unemployment, inflation, recession, savings, investment etc and how these affects national income and best decisions that can improve the national economic growth
The goal of macro economists is to solve problems on the business cycle ( factors the cause short term fluctuations and their effects in national income) and ways to improve long-run economic growth.
