With the knowledge of bill of materials (Table 3) and labor hours (Table 4), the total cost for. manufacturing the steel vessel is calculated and summarized in Table 5. Given that the steel vessel. has a storage capacity of 564 kg of CGH2, its cost is $539 per kg of stored hydrogen.
Prehistoric (Archaeological) & Historic Periods. The Prehistoric Period consists of time periods in the origin and evolution of humankind from about 2.5 million years to about 900 BCE. the Prehistoric Period is divided into the Archaeological Periods of the Stone, Bronze and Iron Ages.
The Peleolithic age started about 750,000 BC and ended around 8,500 BC. During the Paleolithic age humans used stone tools for the first time. The term derived from the Greek root : Palaios = Old and Lithos = Stone. The Neolithic age is the New Stone age which took place between 8,500 BC and 2,500 BC and the bronze and the iron age came after that. Answer: The Paleolithic Age is also known as the B ) Old Stone Age.