Common system

Which of the following diseasse is common among individuals with deficient immune systems?

Nervous system and Hormonal system.

Which of the following is/are the example of common irrigation systems?

Which one of the following systems of classification assumes that organisms belonging to the same taxa have a common ancestor ?

Which of the phrases (a), (b), (c) and (d) given below each statement should be placed in the blank space provided so as to make a meaningful and grammatically correct sentence? If more of the sentences is appropriate, mark (e) as the answer. ____ experts propsed the idea of a common school system.

Transistor||Common Base||Common Emitter||Common Collector

Transistor||Common Base||Common Emitter||Common Collector