Designing a study is key for research methodology planning toward an achievement of study output((s). Therefore, understanding types of study and being able to select an appropriate one for solving a specific research question can assist a researcher to critically thinking of how to plan the study with a consideration of available resources (time, money, people, equipment).
As being a young/junior researcher, comprehensive literature review is crucial for learning lesson from other senior researchers. Reading those publications is hard but extracting information from them is even harder. This is a way of research life !!! Welcome to Environmental Research Methodology Subject.