QUIZ 1)List the four main ingredients of soil 2)What is humus? 3)What helps humus form? 4)Which soil horizon contains the most humus? 5)Horizon A, B and C make up what? 6)How do animals help add air to the soil? 7)Which is the smallest soil particle? 8)Red soil contains what?
Answers 1)Rock particles, humus, water and air 2)Decaying organic matter 3)Bacteria and fungus 4)Horizon A 5)The soil profile 6)By digging in the soil 7)Clay 8)Iron