Find the weight of a 15kg rock acceleration due to gravity is 9.8 m/s2 a. 5.2 n b. 15 n c. 147 n d. 1.53 n

Why does karst topography exist in some geographic location? a. few climates have enough oxygen b. most regions have rock layers other than limestone c. in most regions, the soil is too thin d. the water is too acidic enough in most places