Eastern Europe & the (former) Soviet Union transitioned to a:
Market-based economy.
1. distribute → 3q-15= 2q +10
2. combine like terms → q=25
Answer:
Dense water sinks below less dense water. This is the principle that drives the deep ocean currents that circulate around the world. A combination of high salinity and low temperature near the surface makes seawater dense enough to sink into the deep ocean and flow along the bottom of the basins.