간격

The state or quality of being related or connected to each other. In research, it often refers to the correlation between variables.

The process of putting things into groups according to their characteristics. This is a fundamental step in data analysis and organization.

The act of proving that something is true or correct using evidence or logic. It is a key term in research and legal contexts.

The process of removing or taking something out from a whole, often using a specific method or tool. In research, it refers to selecting specific data or samples.

The process of checking or proving that something is true, accurate, or effective through testing or examination. It is a critical stage in scientific research and policy making.

Material such as coal, gas, or oil that is burned to produce heat or power. A common topic in IELTS science and energy passages.

A system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.

A response or action that occurs in return to a stimulus, event, or chemical substance.

To select or choose something from a group based on specific criteria or for a specific purpose.

To explore, investigate, or search for something to find information or discover new things.