One reason is to grow certain types of plants. For example some plants grow well in acidic soil and other grow well in akalyne based soil. If you plant the wrong plants, they won't grow well, or will die within a year or more.
by the topsoil
Earthworms eat the soil, and excrete what they don't digest - leaving tiny piles of 'worm-poop' in the soil. This breaks down and adds to the general composition of the soil.
The general composition of a soil sample will be some sand, some silt, some clay, and some organic matter, plus a certain amount of microbial life, air and (unless it's completely dried out) some water.
i don't know the answer but i now its cool lol
Plants absrb water through their roots which are in soil; so there must be water under the soil for the plants to survive.
Soil Composition
no, the soil from different places have different composition
It is very important to know the chemical composition of the soils: the quantity and types of fertilizers, materials to correct the acidity of the soil and some other modern additives.
I dont know :d
I dont know :d
soil composition, soil texture, and soil fertility
soil, silt, and clay
Soil composition
Soil composition is soil mixed of rock particles, minerals, decayed organic material, water, and air.
compost soil
Variation of soil composition with depth
Soil in general does not have any exact chemical composition; this question could be answered in principle only for a particular sample of soil.