C. From developing to developed countries.
No.
The speed of sound in water depends on the temperature and pressure. As you go deeper, the pressure increases and the speed of sound increases.
Hadean is the eon that would contain rocks with no fossils.
After the breakup of the Soviet Union, 15 of its former republics became independent. 3 of which, namely Belarus, Russia, and Ukraine, formed the Commonwealth of Independent States or CIS on December 1991. This consisted of the following members: <span>Armenia, Azerbaijan, Belarus, Moldova, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Uzbekistan. There is one associate member which is Turkmenistan. Ukraine, on the other hand, is recognized as a founding and participating country, but not a legal member. Georgia left the organization at around 2008-2009. In the year 2014, Ukraine declined its chairmanship and considered its ties with the organization.</span>