The correct answer is bipolar disorder.
This type of a disorder is characterized by rapid change of moods - one day, a person might feel depressed and very sad, and the other, they might be experiencing extremely elevated moods. This is what happened to Marco in the case above - so he might need to start seeing a therapist or taking medicine.
Answer:
Cultural geographers study how the natural environment influences the development of human culture, such as how the climate affects the agricultural practices of a region. ... For example, health geographers create maps that track the location and spread of specific diseases.
Mark my answer as brainliest please! XD
Richard M. Nixon is known to be the conversion of United States forces in Vietnam. Nixon was the President of the United States at 37th number from 1969 to 1974 at his retirement. He was the single president to retire from office. He had earlier worked as the 36th Vice President of the United States during the years 1953 to 1961.