What is the minimum number of synapses that must be crossed before an afferent nerve impulse becomes a perception?

What is the "great pacific garbage patch"? a large area of marine debris concentrated by rotating ocean currents a large area around the pacific rim where debris collects from natural disasters such as tsunamis an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability a large trash dump located in hawaii

Climate like that in the sahara desert have the fastest rates of weathering

If one were to horizontally divide the earth in half at the equator each half would be a