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:
The biggest rain forest in the world is The Amazon rainforest.
Explaining the purpose and methods of a study are explained to subjectonce it's over is known as research methodology.
Research methodology is the way researchers describe how they intend to conduct research. It is a logical and systematic plan for solving research problems. Methodology describes a researcher's research approach to ensure reliable and valid results that are consistent with goals and objectives.
Research methodology gives validity to research and provides scientifically correct evidence. It also provides a detailed plan to keep researchers on track and make the process smooth, effective and manageable. Researcher methodology helps readers understand the approaches and methods used to reach conclusions.
Know more about research methodology here
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Social media gives access to communication between people all around the world. People may be afraid of reaction and hold back when giving feedback, meanwhile the feedback is more true to heart on social media, due to the lack of the fear of reaction.
