변수

The ability of an organism, organization, or system to survive, grow, or sustain itself independently without external help.

The individual parts or elements that make up a whole system, object, or concept.

The innate characteristics, properties, or nature of a substance, person, or phenomenon. It describes how something behaves or its fundamental makeup.

A physical representation or a theoretical structure used as a pattern for something to be made or to explain how something works. It is often a simplified version of a complex system.

Power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines. A major topic in IELTS Environment and Technology sections.

To develop gradually, especially from a simple to a more complex form. In IELTS, this applies to biology, technology, and social systems.

To combine or integrate different fields, ideas, or techniques to create a synergy. Originally it refers to grafting in gardening.

The act of putting things in a specific order or position; the resulting state of such an arrangement.

The size of a surface or the amount of space that a flat shape or an area of land takes up.

Describing a process or change that cannot be reversed or returned to its original state. Often used in climate change or chemical discussions.