Explanation:
(i)Graham Bell made it because there was a need in transport and communication.
(ii)There was some transport/communication crisis going on in England, which caused industrial revolution in England.So Graham Bell [there are other persons too who invented other things like steam locomotive by George Stephenson] thought to make it.
(iii)Yes,there are certain problems when it was made such as sending a human voice over a wire, later, Graham Bell could able to solve the problem.
<span>The total number of participants was tallied up by the volunteers. </span>
Question 2: We might use flying cars one day
Question 3: My family and I probably won’t go to Florida next year
Question 4: people might live in space one day
Question 5: We won’t be able to travel next year. We can’t afford it
A. None of the others make sense, so it should be that one.
Answer:
Vaccines prevent the spread of contagious, dangerous, and deadly diseases. These include measles, polio, mumps, chicken pox, whooping cough, diphtheria, and HPV. The first vaccine discovered was the smallpox vaccine. Smallpox was a deadly illness.
A vaccine activates our immune system without making us sick. Many dangerous infectious diseases can be prevented in this simple and effective way. A vaccine activates our immune system without making us sick.
Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.
Explanation:
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