All the surroundings, both living and non-living.

To examine and judge the merit or significance of something, including processes, events, descriptions, relationships or data.

In science, evidence is data that is considered reliable and valid, and that can be used to support a particular idea, conclusion or decision. Evidence gives weight or value to data by considering its credibility, acceptance, bias, status, appropriateness and reasonableness.

An investigation that involves carrying out a practical activity.