Some estimates put the first human settlements in the Amazon at 32,000 to 39,000 years ago. Since that time, Amazon people have developed lifestyles that are well integrated with the benefits and constraints of rainforests.
An estimated 7-10 million Amerindians (the term for American Indigenous peoples) lived in American rainforests, half of them in Brazil, at the time of European arrival. When Pizarro arrived in Peru, more land was under cultivation and more food was being produced in the Andean region than today.
It was the continental drift.
Plate tectonic theory had its beginnings in 1915 when Alfred Wegener proposed his theory of "continental drift."
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Answer:
Settlement patterns. Southeast Asia is predominantly rural: three-fourths of the people live in nonurban areas. Moreover, population is heavily clustered in fertile river valleys and especially in delta areas, such as those of the Mekong and Irrawaddy rivers.Most of the region's people live in the more temperate climate zones. In East Asia, for example, the coastal regions of Central and Southern China, Japan, and South Korea are primarily a humid temperate climate.
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A diatomaceous earth is ia an example of light-colored sedimentary rock
Explanation:
- Composed chiefly of siliceous shells of diatoms are soft and are friable rock this rock often floats on the water just like pumice before the pores are initially filled with water and are usually white.
- The silica is formed from the weathered silicate rocks and besides these deposits are geologically young, they have become abundant since the past 50 million years ago.
- The wine and beer industry make use of diatomaceous earth also added in toothpaste as it has milder abrasive properties.