But it was not until 1928 that penicillin, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St. Mary's Hospital in London.
Answer:Marine regression is a geological process occurring when areas of submerged seafloor are exposed above the sea level. The opposite event, marine transgression, occurs when flooding from the sea covers previously exposed land.
Explanation:
Aids is one of the disease that damage little by little the immune system until the human body die.
the answer would be b because b is the only one that changes while a and c does not change for their type.
hope this helps! ❤ from peachimin :)
