PULL The Pin (It Will Break The Tamper Seal)
AIM Low Pointing The Nozzle At The Base Of The Fire
SQUEEZE The Handle To Release The Extinguishing Agent
SWEEP from Side To Side At The Base Of The Fire Until The Fire Is Out
Answer: A. Word of mouth is a useless data source.
Explanation: Experimentation refers to an empirical procedure or process which is used to validate an hypothesis or establish a fact. However, experimentation requires rules which guides the process, these rules are necessary in other to avoid bias, false conclusions or inference.
According to the options given in the question above, facts used in experimentation should be traceable and reproducible. Word of the mouth is a useless data source as it usually has no empirical basis. Expert opinion or information being established by three or six sources could be considered as a fact.
Excavating means digging a hole or channel
I hope I helped :)
Answer:
the various sources of drinking water in nepal includes glaciers, rivers, rainfall, lakes, ponds, springs, and groundwater .
rainfall ,ponds and groundwater has been used more in our country.
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