Question

Give reasons :
1.
Today the man is healthier than his ancestors.
2.
An antiseptic used at the time of operations save many lives.
3
.
Vaccination prevents a few diseases.
4.
Awareness to basic heath care prevent many diseases.
5.
Making a patient senseless/painless before an operation is must.​

Answer 1

Explanation:

1.) We are physically on average better than our ancestors due to improve nutrition lifestyle and Healthcare.

3.) Polio, Tetanus, The Flu, Hepatitis.

I know only these two questions.