soils

Question 1

soil diagram name all the layers

Answer 1

1. O-horizon 2. A-horizon 3. B-horizon 4. C-horizon 5. Bedrock layer

Question 2

soil composition

Answer 2

45% mineral matter 25% air 25% water 4% humus 1% living organisms

Question 3

how does soil form

Answer 3

soil forms by the parent rock breaking down over time into smaller fragments to form 45% of the soil and the overlying leaves and insects die and decompose to form humus and than over 300 years 1cm of soil forms

Question 3

what is brown earth soil

Answer 3

its irelands most common soil, brown in colour, very fertile, and has a very high amounts of humus

Question 4

what is podzol soil

Answer 4

just in A & B horizon is slightly acidic hardpan forms in it its infertile and is grey

Question 5

what is leaching

Answer 5

the downward movement of nutrients or rain in soil by a excess amount of it

Question 6

what is humus

Answer 6

a dark nutrient rich substance that is formed by decomposed organic matter e.g. dead bugs/plants