The majority of the Russian population lives <span>between Lithuania, Belarus, Ukraine borders and the Ural Mountains - for example already 10% to 20% of Russians live in Moscow - so we can reject answers a) and b)
However, i doubt it's 90% - otherwise they wouldn't have built the Transsiberian Railway to Vladivostok - so the correct answer is 75%.</span> <span />
The bowl-shaped depression at
the top of a volcano is a crater. The answer is letter D. The crater is where
the vent forms and releases magma, ashes and lava during volcanic eruption.
