Homes, animal shelters, stores for food etc, hiding-places for goods or people, religious rites.
The verb in the sentence is "may have been." This is a modal verb construction that expresses possibility or uncertainty about the past action of caves being the first human dwellings.
Geologically, their sediments and speleothems preserve palaeoclimate evidence. Palaeontologically, many caves preserve animal remains. Archaeologically, some caves preserve human remains, artefacts or art.
Cavemen used caves as shelter for protection from the elements, predators, and other dangers. They would seek out natural caves or create their own shelters by modifying caves with materials like rocks and branches. Caves also provided a stable and cool environment for storage of tools, food, and other resources.
They are not as a general rule, because caves don't contain economic minerals - apart from their host limestone. In the past, metal-ore mines occasionally broke into natural caves by accident,such as in the Peak District of the English Midlands (18-19C lead mining).
The Chislehurst Caves, in Kent, England, are not dangerous to enter. The site is a tourist attraction and guided tours of the caves are offered. The caves were even used as bomb shelters during World War 2.
what has sulfur been used in the past?what has sulfur been used in the past?
what has sulfur been used in the past?what has sulfur been used in the past?
They made people dig the caves with their bare hands to get chalk and flint, which was used to make roads and to build houses. There was also a hellfire club in the caves.
Suitable caves have been human habitats in the past, or been used as stores. Active caves are conduits taking water from the hills to their resurgences (springs) so some provide water supplies. Nowaday caves are visitid for recreation, scientific study or as tourist attractions. Biologically they offer shelter or roosts to some animals, and permanent homes to other, highly-specialised creatures.
The verb in the sentence is "may have been." This is a modal verb construction that expresses possibility or uncertainty about the past action of caves being the first human dwellings.
yes it has been used successfully in the past
Yes it has been successful in the past
A quick search reveals they are not natural caves but former underground building-stone quarries that have been used for other purposes since.
Yes it has been successful in the past
Have is used for present and Have been is used for past continous.
"Been" is the past participle of the verb "to be." It is used to indicate that something has happened or existed in the past.
it has been used for life forms for bones and shells.