Why are many bacterial infections more difficult to treat now than they were fifty years ago?

People are more vulnerable from drugs and things we do nowadays

Explanation:

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )