What helps us to learn about classical india during the vedic period

What does the word submerged mean in the following sentence? after it rained for three days in a row, the streets were completely submerged.

What is the theme of "the story of the fisherman"?

When volcanoes erupt, magma (hot, molten rock) rises toward the surface of the earth. as magma cools, solid rock forms. this rock contains substances from the interior of the earth. which of the following natural resources is likely to be plentiful near subduction zones where volcanic activity has occurred in the past?