The answer is external stimulus
Answer: tympanic membrane
14. They get pollinated by animals, and birds that come to
Answer:Radioisotope Liver Scanner.
Explanation:
Radioisotope liver scan is a type of nuclear medication in which the radioactive tracer is formed by adding radioactive atoms to the molecules absorbed by the normal liver tissues.
It is used in diagnosing liver diseases.
Complex organisms need cells that can perform many different functions. they need to be supported on a cellular level. Without specialized cells you they won't be able to perform different functions.
