The Volga River starts in the <span>Valdai Hills and drains into the Caspian Sea.</span>
Answer:
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Explanation:
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Answer: B. Metamorphic rocks
Explanation: Metamorphic rocks are those that have undergone changes due to extreme heat and pressure. Thus, the rock, from which it becomes a metamorphic rock, is heated at temperatures above 150-200 ° and exposed to a pressure of 1500 bar. In this way, the structure of the rock is changed, in terms of the arrangement of the atoms, and the result is a change of physical and chemical properties. There are two basic types of metamorphic rocks: foliated and slate. Generally, some of the metamorphic rocks are anthracite, schist, quartzite, marble, etc.
Air that rose just north of the equator flows north. Air that rose just south of the equator flows south. This circulation creates the trade winds, tropical rain-belts and hurricanes, subtropical deserts and the jet streams.
Explanation:
The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table.
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ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.
Name Atomic Number Electron Configuration
Argon 18 1s2 2s22p63s23p6
Period 4
Potassium 19 1s2 2s22p63s23p64s1
Calcium 20 1s2 2s22p63s23p64s2
