Who has the ultimate power in a system of popular sovereignty

In a planned economy, which of the following does the job of market forces in order to determine the outcomes?

Brainliestt asap!me : ) describe the difference : capitalism vs. communism

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