Q.3 Give the meaning of following terms
(1) Lithosphere (2) hydrosphere (3) Atmosphere (4) Biosphere(5) pollution
Answers
Explanation:
1) A lithosphere is the rigid, outermost shell of a terrestrial-type planet or natural satellite. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of up to thousands of years or more.
2) all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds.
3) a : the gaseous envelope of a celestial body (such as a planet) b : the whole mass of air surrounding the earth. 2 : the air of a locality the stuffy atmosphere of the waiting room. 3 : a surrounding influence or environment an atmosphere of hostility.
4) Biosphere, relatively thin life-supporting stratum of Earth's surface, extending from a few kilometres into the atmosphere to the deep-sea vents of the ocean. The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients.
5) Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land
Explanation:
(1) The landmass is the solid realm, called the lithosphere. It is the outer solid layer of the earth. The Greek word lithos means rocks.
(2) The water bodies are the liquid realm, called the hydrosphere.
(3) The air around the earth is the gaseous realm, called the atmosphere.
(4) The narrow zone of contact between the land, water and air, where all forms of life exist, is called the biosphere.
(5) Any undesirable change in the biotic or abiotic components of our environment, which is harmful to living organisms, is called pollution.