Surface, crust, mantle, and core
Answer:
The blank would be River
Explanation:
"River deltas are important in human civilization, as they are major agricultural production centers and population centers. They can provide coastline defense and can impact drinking water supply. They are also ecologically important, with different species' assemblages depending on their landscape position."
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A. Help take care of those in need, such as the poor.
This is a tenet of social programs and socialism.
Stone tools are more commonly found on archaeological sites thought to be associated with Homo habilis.
The ancient human species Homo habilis, also known as "handy man," lived in East and South Africa during the Early Pleistocene between 2.31 million and 1.65 million years ago (mya). When H. habilis was first described as a species in 1964, there was a lot of debate about it, and many scientists suggested that it be grouped with Australopithecus africanus—the only other early hominin species at the time—but as time went on and more significant discoveries were made, H. habilis gained more recognition. By the 1980s, it had been hypothesized that Homo habilis, which later gave rise to Homo erectus, was a direct ancestor of modern humans.
Learn more about Homo habilis here
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Just learned this the 5 stages are
fixation or volatilization, mineralization, nitrification, immobilization, and denitrification.
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