What is the percentage porosity of a soil sample whose volume is 250cm when the volume of air is 200cm? by Sunday | Jun 9 | Agricultural Science WAEC | 0 comments A. 20 B. 25 C. 50 D. 80 Correct Answer: Option A – 20 Users Also Read These:A fresh garden soil sample weighed 25kg. When…A to eater to glass to air to water to glass to air.…If 5.0cm‾³ of 0.200 mol dm‾³ Na2CO3 was diluted to…When chlorine is passed through a sample of water,…A fresh soil sample of mass 180 g had a mass of 120…