Question

Acid dissolved nutrients and valuable materials from
(a) Water
(b) Soil
(c) Mountains
(d) Air

Answer 1

Hint: One of the important habitat for most of the organisms on the earth which help in purification and storage of water and provide a suitable medium for the development of a plant

Complete answer:
All the organic matter, minerals, gases, inorganic compounds together constitute soil. The layer of the earth where the soil is present is called the pedosphere. Four important functions of the soil that also decides the property of soil are that it acts as a medium for the growth of a plant, it can store water and supply it for the plants, and also helps in water purification. It is one of the important modifiers of the earth’s atmosphere. Soil is one of the habitats for most of the organisms on the earth.

Additional Information: - pedology is the branch of science that deals with the soil and its properties and edaphology is another branch of soil science that deals with the influence of soil on living organisms.
- soil is made up of organic matter, nutrients, gases. It has 45% minerals and 5% or organic matter. Water and gases occupy another 50% of soil.
- water is present in three states namely solid liquid and vapor and is formed by two compounds namely oxygen and hydrogen. Two molecules of hydrogen and one molecule of oxygen combine to form water molecules.
- mountains are elevated structures that are present above the ground level for about more than 600 meters. They are made up of rocks and soil. Mountains less than 600meters in height are called hills
- air is composed of atmospheric gases like nitrogen, oxygen, carbon dioxide, and a trace amount of inert gases along with water vapor. The percentage of nitrogen is more in the air which is about 78%, oxygen constitutes 21%, and 2% of carbon dioxide and other gases.
So, the correct answer is ‘soil’

Note: It takes approximately 500 years to form soil on the top of the ground that is fertile and suitable for growing plants
Soil is one of the most important habitats for most of the organisms on earth. A handful of soil has more number of organisms than the number of people on earth.