Its central role in field-work because it yields the most reliable evidence for human activities in the past and changes in those activities from period to period.

excavation

Explanation:

Excavation retains its central role in field-work because it yields the most reliable evidence for human activities in the past and changes in those activities from period to period.

In archeology, excavation is the procedure by which archaeologists define, retrieve, and record cultural and biological remains found in the ground. It is an important archaeological tool for understanding the processes of the human past. Past activities leave traces in the form of house foundations, graves, artifacts, bones, seeds, and numerous other traces which are helpful in studying the way of life of the people who lived in that era. Excavation helps uncover this remains.

what group of people depend on what yoy are talking i will still you once you tell me what group of people you are talking about : )

i think i know what group you are talking about so the brahmins

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d