The correct answer is - a. deposition.
The deltas are formed at the mouths of the rivers right before they enter a large water body, like ocean, sea, or lake. The rivers carry lot of material with them, and they do not have any problem carrying it while they are moving faster, but when they are slowing down significantly, they lose the force required to carry the material, so the material starts to deposit on the river banks. As the material deposits, it makes it hard for all of the river's water to pass through its river bed that is becoming partially blocked, so the river starts to branch out, and seen from above it takes a triangular shape if the peripheries are outlined, or as a tree that is branching out.
<span>B.
Lava, ash, and other materials from volcanic eruptions gradually build up over time. This is the correct answer. The volcanic molten material is ejected from fissures or initial cones and as the lava flows out and cools and as the pyroclastic materials solidify and tumble down the slopes, they build up the flanks of the volcanoes.</span>
Roosevelt leave the Republican party because they ran against each other in the General election.
Option b
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Explanation:</u></h3>
As known and told widely, Taft and Roosevelt begun as republicans and had little political dislike among each other. However, in 1912, Theodore Roosevelt wanted to be elected for president in an individual term through a third political party, The Progressive Party.
He believed in his status among the commoners and others. He believed firmly that, it would be the very way for presidential position for him. But Taft had defeated him in the nomination; yet he stood up against him that year as a third party candidate but he lost to Woodrow Wilson.
