A patient comes into the ER complaining of ear pain and the inability to hear anything with her right ear. The physiciain on call notes that the patient has a ruptured ear drum. Explain why a ruptured ear drum would contribute to temporary hearing loss.

Explanation:

A ruptured eardrum can result in hearing loss. It can also make your middle ear vulnerable to infections. A ruptured eardrum usually heals within a few weeks without treatment.

the answer is c on e2020, bud.

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).