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Copper has been in use at least 10,000 years, but more than 95% of all copper ever mined and smelted has been extracted since 1900, and more than half was extracted in only the last 24 years. As with many natural resources, the total amount of copper on Earth is vast (around 1014 tons just in the top kilometer of Earth's crust, or about 5 million years' worth at the current rate of extraction). However, only a tiny fraction of these reserves is economically viable, given present-day prices and technologies. Various estimates of existing copper reserves available for mining vary from 25 years to 60 years, depending on core assumptions such as the growth rate. Recycling is a major source of copper in the modern world. Because of these and other factors, the future of copper production and supply is the subject of much debate, including the concept of peak copper, analogous to peak oil.
How much copper is estimated to exsist on earth?
A: 1014 tons

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St. Anselm's approach was to define God as, "that than which nothing greater can be conceived". Famed pantheist philosopher Baruch Spinoza would later carry this idea to its extreme: "By God I understand a being absolutely infinite, i.e., a substance consisting of infinite attributes, of which each one expresses an eternal and infinite essence." For Spinoza, the whole of the natural universe is made of one substance, God, or its equivalent, Nature. His proof for the existence of God was a variation of the Ontological argument.
Who's idea about God did St. Anselm carry to its extreme?
A: unanswerable

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UNFPA is the world's largest multilateral source of funding for population and reproductive health programs. The Fund works with governments and non-governmental organizations in over 150 countries with the support of the international community, supporting programs that help women, men and young people:
UNFPA is the largest worldwide funder of what type of programs?
A: population and reproductive health programs

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Excavations in and near Agordat in central Eritrea yielded the remains of an ancient pre-Aksumite civilization known as the Gash Group. Ceramics were discovered that were related to those of the C-Group (Temehu) pastoral culture, which inhabited the Nile Valley between 25001500 BC. Some sources dating back to 3500 BC. Shards akin to those of the Kerma culture, another community that flourished in the Nile Valley around the same period, were also found at other local archaeological sites in the Barka valley belonging to the Gash Group. According to Peter Behrens (1981) and Marianne Bechaus-Gerst (2000), linguistic evidence indicates that the C-Group and Kerma peoples spoke Afroasiatic languages of the Berber and Cushitic branches, respectively.
Where did the Berber live in ancient times?
A:
unanswerable