FORESTRY
SOIL SCIENCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the part of soil made up of decayed parts of once-living things.
|
|
|
a dip that is made of beans.
|
|
|
a bone that can be found in the upper arm.
|
|
|
a sound people make when their lips are together.
|
Detailed explanation-1: -Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up. This material is called leaf litter. When animals die, their remains add to the litter.
Detailed explanation-2: -Soil is partly made up of decaying plant or animal remains. These are called organic matter or humus and contain the living and once living components of our soil. Soil mostly contains pieces of disintegrating rocks or inorganic matter, water, and air.
Detailed explanation-3: -The uppermost layer of the soil is called topsoil and this layer contains humus, plant roots, and living creatures. The more humus found in topsoil, the more nutrient rich the topsoil and the better the conditions for growing plants.