People with hypersomnia have difficulty maintaining sleep.

hyper means excessive

hypo means less than, lack of

iso means equal

Explanation:

hypersomnia would mean too much sleep

the ecg findings of an acute anterior myocardial infarction wall include: st segment elevation in the anterior leads (v3 and v4) at the j point and sometimes in the septal or lateral leads, depending on the extent of the mi. this st segment elevation is concave downward and frequently overwhelms the t wave.

explanation:

the answer is c, the development of reading and writing in young children