Formation of Soil 12/4/15

0 5 flashcards morelandj

start learning

Question		Answer
a mixture of sand, silt, soil, clay, rock and humus (plant and animal remains) start learning		soil
when forces on Earth breaks rocks apart or wear rock away start learning		weathering
the uppermost 5 to 20 cm of soil with a high concentration of organic matter and microorganisms where almost all of the biological activity in soil takes place start learning		topsoil
easily broken down by biological activity, especially bacteria in the soil start learning		biodegradable
to break down into smaller, more basic parts start learning		decompose

hobby