Most of earth’s landmasses are covered by a mixture of bits of rocks and bits of once-living parts of plants and animals. this material is called

Soil is the material which is composed of a mixture of bits of rocks and bits of once living parts of plants and animals.

Soil

Explanation:

Most of Earth's landmasses are covered with soil. It can also be termed as there is no landmass without soil.

It provides a medium for the growth of plants, for the living of bacteria or other micro-organism.

The plants get water and nutrients for their survival through the soil. The farming of corresponding plants or fruits or vegetables are done depending on the mineral contents of the soil.

Based on the composition of soil only, the different types of harvesting occurs at different places.

These soils are made up of tiny pieces of rocks and living parts of flora and fauna.

The once living parts of flora and fauna converted into soils along with the rainwater and river water makes the soil in a particular place to be best for harvesting particular items.

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

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