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Answer:
A signal is an electromagnetic or electrical current that is used for carrying data from one system or network to another. The signal is a function that conveys information about a phenomenon.
In electronics and telecommunications, it refers to any time-varying voltage that is an electromagnetic wave which carries information. A signal can also be defined as an observable change in quality such as quantity
Explanation:
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Answer: Option A --the lack of adequate medical and health resources in a low-income country is far greater than in high-income countries.
Explanation: Provided that high fertility rate in a low income countries, the lack of adequate medical and health resources in a low-income country is far greater than in high-income countries is the only major factor that would explain the high mortality rate dramatically.
A motive is a need or want strong enough to cause the person to seek satisfaction