Extended spectrum beta-lactamase

1.Why is antibiotic resistance so threatening? 100+ words

2.What are extended spectrum beta-lactamase(ESBL) and why are they of great concern in foods? 100+ words

3.How do the antibiotic-resistant organisms arise in foods? 100+ words

4.Should aquatic food farming be banned due to the high incidence of antibiotic-resistant bacteria associated with these practices? Explain your reasoning using specific examples. 100+ words