<span>The correct answer should be B. The overuse of antibiotics. Since antibiotics as their name says kill biotics, that is, they fight against bacteria, they were used a lot and bacteria started developing resistance to them which is a common thing. Since it's difficult to find new types and the trials last long, new diseases are emerging faster than we can create medicine for them.</span>
I'm pretty sure it's a developed country A
Index Fossils <span>can be used to determine if two rock layers were deposited at the same time.</span>
