What do we conclude if a planet has few impact craters of any size?

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

Determine which of the two measurements in each set is lesser.10°f or 20°ca. 10-fb. 20°c

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air