<u>The Fossil Record</u>
They are useful in dating geological material, because they indicate which species were alive at the time the rock was formed. The geographic distribution of fossils is also useful in understanding how different species spread and evolved over time.
Answer:Upton Sinclair was a famous novelist and social crusader from California, who pioneered the kind of journalism known as "muckraking." His best-known novel was "The Jungle" which was an expose of the appalling and unsanitary conditions in the meat-packing industry.
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the pic is black, we cant see nothing.
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climate change, land degradation etc. (more info below)
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There are many global environmental changes that could cause human migration. Apart from climate change, land degradation in the form of nutrient depletion, soil erosion, contamination and salinisation can also contribute to changes that contribute to migration.
hope I helped!
