properties - qualities and characteristics of a substance that describe and identify it., constraints - limitations, conditions, or restrictions that limit the possible solutions or outcomes of a problem., proportion - refers to the relationship between two quantities, often expressed as a ratio., investigation - a systematic and planned process of inquiry used to explore a question or problem., phenomenon - any observable event, fact, or occurrence, whether natural or human-made, that can be studied and explained through scientific investigation., particles - a tiny piece of matter, ranging from subatomic particles like electrons to larger atoms and molecules., decomposition  - the natural process where organic matter breaks down releasing nutrients back into the environment. , ecosystem - a biological community of interacting organisms and their physical environment., apparent - How something appears or is perceived, especially when considering brightness or motion as seen from Earth., evidence - information, facts, or data gathered through scientific methods that supports or refutes a scientific claim, hypothesis, or theory., quantitative - the use of numbers and measurements involves collecting and analyzing data that can be expressed numerically., qualitative - descriptive, non-numerical information that focuses on qualities and characteristics., observable - is a physical property or physical quantity that can be measured., climate - the weather conditions prevailing in an area in general or over a long period., weather - the state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc., distribution - the way in which something is shared out among a group or spread over an area.,

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