Antibiotics are, initially, molecules naturally synthesized by microorganisms to fight against bacteria competing with their environment. This created a pressure of selection on the bacterial populations, leading to the appearance of resistant strains. In fact, when an antibiotic is used, only bacteria with defense systems against this molecule survive (and reproduce).
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1. Sustainable 2. Environmental
The prevalence rate of a disease refers to the number of people in a population that are affected by a particular disease. The only two reasons why the number of this set of people will decrease is if a cure is found for the disease or if those affected are dying.
Cure or death will reduce the prevalence rate.<span />
The answer is 1. Hope this answer was useful!
Answer:
Embryonic stem cells are capable of self-renewal and limited differentiation.
Explanation:
