The Mississippi River has many small tributaries, but its primary tributaries are the Ohio River and the Missouri River. The Amazon River also has a large number of tributaries, including the Rio Negro, which is one of the largest rivers in the world in terms of volume. The Nile’s primary tributary is the Atbara River.
From the given statements population have been migrating from region to region for thousands of years in Eurasia would best be classified under geography theme of region.
Answer: Option A
<u>Explanation:</u>
It is believed that there are five different themes of geography and they are location, place, human-environment interaction, movement and region. The constituents of these five themes encompass the whole subject of geography.
Human-environment interaction is defined as the study of how the humans are causing impact on the environment and how environment affects human.
<span>When new clay sediment is deposited on top of old beach material, it's known as.C. transgression.This is because the clay would have to come from sea inundating the beach ie rising and depositing the clay on the old beach. The sea rising could be from say tectonic movement or from glaciers melting but before glacial rebound.</span>
Saturn has 62 moons. Hope this helps! Have a wonderful day!