Answer:
The Great Rift Valley is a series of contiguous geographic trenches.
Explanation:
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Answer:
Tuskegee.
Explanation:
As the exercise describes, one of the most shameful violations of research ethics to date, nearly 400 African American men from Tuskegee (later called the Tuskegee syphilis experiment) were not informed that they had been diagnosed with syphilis and were not provided with available, effective treatments for this illness. The aim of this study was to observe and analyze how syphilis proceded when untreated. So, this men were told they were being treated for free.
The answer is that it shows a network of food chains. Models that have to do with food chains are used to show what certain ecosystems would be like in real life. While using these models, specialists can test different types of real food chains. Certain specialized scientists use the food web models to be able to see the networks of undead organisms that are included in a food chain. Hope I helped!
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The major landforms in the northeast of North America are the Atlantic coastalplains<span>, </span>Appalachian Mountains<span>, the </span>Adirondack Mountains<span> and natural communities. Each is characterized by distinct geological features and the natural plant and animal species that live in each region.</span>
