Why was the buffer zone so vital to the Soviets?

What is the purpose of the system of checks and balances

The sixth amendment of the u.s. constitution guarantees the right to which of the following?

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste