Alexander Fleming discovered the penicillin in 1928. He noticed that some bacteria he had left in a petri dish had been killed by naturally occurring penicillium mould.The penicillin began the era of antibiotics, has been recognized as one of the greatest advances in therapeutic medicine. The research required to determine if the penicillium extract was safe and killed bacteria was done at Oxford University.P<span>rogram of animal experiments and clinical trials was carried.</span>
Answer:
The correct answer is option B. cohort effects.
Explanation:
Cohort effects is an effect that is used in the social science or psychology to explain difference or variations in the traits of part of the study over a period of time in individuals who have some type of similar experiences such as year of birth or age.
It can be understood as a historical event that can lead to affect the cohort due to the life phase it takes place.
Thus, the correct answer is option B. cohort effects.
Adam should try to manage him time well and he should make a plan on when to do each thing. This way he will be less stressed out about all of it.