Answer:
Telegraphy, is the right answer.
Explanation:
Telegraphy is the long-distance communication of textual information where the sender practices emblematic languages, known to the receiver, rather than a material transfer of an article carrying the information. Thus flag semaphore is a system of telegraphy. Though the ancient system of signalling was more extensive complex as in China, were usually not competent in transferring temporary text messages.
As per the question, Joe’s attempt to communicate using on a few essential words can be described as Telegraphy.
Explanation:
a. irrigation improvements
Answer:
America is a republic aka a democracy
Explanation:
Answer:
Control variable
Explanation:
During the conduction of experiments for research, a control variable is introduced as a variable the researcher conducting the experiment holds as a constant. It is neither the dependent variable nor the independent variable, but it is something that affects the outcome thereby making it important. Control variable and controlled variable are two different things as the latter is another name for independent variable.
