Anumber of studies examining the number of elderly adults with major ncd are not in agreement. explain at least three possible reasons, and explain how plausible you think each is and why

1. Many form of NCDs appear without obvious symtoms, making people who actually had it may not realize that they had it.
2. In elderly, the number of NCDS may be hidden behind so many other complications, and will mess up the number.
3. Many forms of NCD in elderly caused sudden death before it   recorded.

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.