Why are many bacterial infections more difficult to treat now than they were fifty years ago?
B)
Because bacteria have evolved resistance to antibiotics.
Answer:
The correct answer is option B
B. encourage customers to try out the product before purchasing it.
Explanation:
I believe the safety and satisfaction of the customers is the priority in business so it will put the customer's life at risk to ask them to try out the product before purchasing it. What if there is a defect in the product which could be harmful to the customers?. To I believe that option is not part if the safety principle.
If we use the scientific knowledge and skill rationally, aspects of environment,population and health are effectively developed. It helps to fulfill the objectives of those subjects. The HPE is a value related subject. In order to change the inappropriate traditional values, they should be tested scientifically.
Answer:
Iris
Explanation:
The iris opens and closes to control the amount of light entering through the pupil (schepens.harvard.edu).
C. No one knew germs existed
Therefore diseases spread because they did not know how to prevent them and they did not have good hygiene.