Answer: Hello your question is open ended hence I will provide a more general answer
answer : Use of systematic sampling method
Explanation:
To obtain a representative sample of pebbles ( more representative sample ) Leaners should use <em>Systematic sampling method</em> . This is because systematic sampling covers the the entire population by obtaining samples from the population of pebbles at regular intervals hence it is a more comprehensive system of sampling when compared to Random and stratified sampling
Answer:
why did you ask a question to answer a question
Answer:
regular childhood vaccination
good sanitation
availability of medical care and treatment
Explanation:
The United States controls and prevents the spread of diseases in many ways. One of which is "regular childhood vaccination." This is considered to <em>be the most effective way. </em>There are about 10 vaccines that are recommended to kids.
The USA also follows<em> good sanitation</em> which includes<u> potable drinking water supply</u> available to most people and <u>having enough sewers were wastes are expelled.</u>
<em>Medical care and treatment in the USA is more advanced than other countries.</em> This is the reason why some people seek treatment in the USA when their disease is also more advanced and debilitating. <em>The USA has specialized facilities </em>catering to different kinds of diseases and their corresponding treatments.
Explanation:
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