Economic Geography

- Option (A) is correct: Physiological density is defined as the total population divided by the net cultivated area, which is accurate.
- Option (B) is correct: Agricultural density refers to the total agricultural population divided by the net cultivable area, which is correctly matched.
- Option (C) is correct: Population density is defined as the total population divided by the total area, which is also correct.
- Option (D) is incorrect: The term "marginal worker" refers to those individuals who are engaged in low-wage or part-time work. It is not calculated by dividing the total population by the total working population. The correct definition of marginal worker is individuals who are not fully employed or engaged in agricultural work on a regular basis. This term is not about calculating a ratio of population and working population.
Thus, the incorrect match is (D).

Human geography seeks to understand how humans interact with their environment.
The physical environment—such as climate, landforms, and natural resources—directly influences where and how people live, work, and establish their communities.
The relationship between humans and their environment is reciprocal. Human beings modify their surroundings to suit their needs, as seen in agricultural practices, urban development, and resource extraction. At the same time, the environment shapes human activities, as seen in how different climatic and geographical conditions dictate the types of crops grown, the types of housing constructed, and the economic activities undertaken.
For instance, in areas with fertile soil and favorable climate conditions, human societies have historically been able to thrive through farming. In contrast, in harsher environments like deserts or arctic regions, human settlements have been sparse or dependent on specialized technologies and resources.
Thus, human geography emphasizes the dynamic interaction between human societies and the physical environment, exploring how the environment influences human activities and how humans shape the environment in return.