The rock pictured is flint. How can the grain size of flint be described ? fine grain coarse grain no visible grain

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

Following lenin’s death, who took control of the soviet union

Recrystallization definition earth science