CONSERVATION OF NATURAL RESOURCES
INTRODUCTION
Living organism utilizes various natural resources in conservation and judicious use of natural resources in nature of the earth. In this way they can maintain their lives. Resources like air, water, soil, sunlight and minerals we can find in different layers of the earth. Most of the natural resources are the non-living or a-biotic components of nature. Human beings use these natural resources in order to meet their basic requirements. We must save these natural resources for our own interest in conservation and judicious use of natural resources .
DIFFERENT LAYERS EARTH IN HYDROSPHERE
- LITHOSPHERE : Land is the outer crust of the planet which contains rocks and minerals in conservation and judicious use of natural resources
- HYDROSPERE: 75% of water covers the earth’s surface. Seas, oceans, rivers, lakes, streams, ponds and underground water are the main sources of hydrosphere. We trem earth as blue planet due to presence of plenty of water.
- ATMOSPHERE: The whole earth surrounding is covered by multi- layered gaseous envelope which we term as atmosphere in conservation and judicious use of natural resources.
- BIOSPHERE: In this zone we get life- supporting zone of the earth. Here, the atmosphere, hydrosphere, and the lithosphere are interacting to make us for survival.
VARIOUS NATURAL RESOURCES IN CONSERVATION AND JUDICIOUS USE OF NATURAL RESOURCES [ HYDROSPHERE]
THE BREATHE OF LIFE AIR:
It is the mixture of many gases like nitrogen, oxygen, carbon dioxide and water vapors. These precious components along with proper ratio makes our life sustainable. Living organisms execute respiration by oxygen. That gas also helps in combustion. Green plants do photosynthesis with the help of carbon dioxide. Atmosphere in conservation and judicious use of natural resources protects us from ultra violet rays.
A WONDER LIQUID WATER FOUND IN HYDROSPHERE
It is an inexhaustible natural resource. It occupy larger surface area of the earth above and under the ground. We can observe water vapor as another source of water. This resource is essential for many purposes.
- Water IN HYDROSPHERE is a medium for cellular process.
- It helps in transportation of various substances in dissolved form HYDROSPHERE
- We can maintain body temperature with the help of water in HYDROSPHERE.
- Balance of salt and minerals in body is done by water in HYDROSPHERE.
- For survival we need water for various biological reactions in HYDROSPHERE.
BASEMENT OF LIFE SOIL
IN HYDROSPHERE
It is a mixture of small particles of rocks, decaying living organisms or humus which is a dark color organic matter and partially decomposed plant and animal bodies which we term as detritus in conservation and judicious use of natural resources. Soil also contains useful microorganisms which makes the soil nutritive. A-biotic components like air, water, minerals are also present in the soil. Availability of microorganism, humus and organic matter decide the quality of the soil. Topsoil is the uppermost layer of the soil . The quality of this layer decides the biodiversity of a particular area IN HYDROSPHERE.
QUESTIONS ON CONSERVATION AND JUDICIOUS USE OF NATURAL RESOURCES IN HYDROSPHERE
Qs1: Why does the soil become red or black?
Ans1: Black soil is due to presence of Ca, Fe, Mg, Al minerals. Red soil is due to presence of iron oxide conservation and judicious use of natural resources.
Qs2:Fertile soil has lots of humus, why?
Ans2: There are adequate amount of humus in fertile soil . reasons are:
- Humus binds the soil particles into crumbs. In this way soil gets proper hydration and air.
- Soil becomes porous due to presence of humus. Plant root can easily penetrate inside the soil.
- Humus is the rich source of minerals.
- It contains enhancing factors for plant growth.
QUESTIONS ON GIVE RERASON IN CONSERVATION AND JUDICIOUS USE OF NATURAL RESOURCES IN HYDROSPHERE
Qs3: Greenhouse effect is the cause of over burning of carbon products like coal, why?
Ans3: Atmosphere can absorb lot of carbon dioxide by excessive burning. Carbon dioxide allows the solar radiations to be trapped in the earth’s surface. The heat radiation cannot escape from the atmosphere. So global temperature increases causing greenhouse effect.
Qs4: why do we mention soil as mixture?
Ans4: Soil consists of particles of sand, silt, clay and humus these are not dissolved in water. These particles settle down in layers. We can easily separate these particles manually. That is why we term soil as mixture.
Qs5: Temperature ranges from -190°C to 110°C on the surface of the moon, why?
Ans5: The moon is at the same distance from the sun as the earth. But there is very cold and hot temperature variations from -190° C to 110° C on the moon. This is because moon has no atmosphere. In conservation and judicious use of natural resources atmosphere is very important in temperature control. This blanket of air regulates high rise of temperature or sudden cooling in controlled way.
HIGHER ORDER THINKING SKILLS IN CONSERVATION AND JUDICIOUS USE OF NATURAL RESOURCES IN HYDROSPHERE
Qs6: Inside a glass structure the temperature is always high than that of outside, why?
Ans6: Glass can trap heat to rise temperature. Same way the temperature of the earth increases as glass house by carbon dioxide. That is why inside temperature of glass is more than outside.
Qs7: Soil is formed by water, if you agree with this statement, then justify.
Ans7: Yes, Water helps in the breakdown of bigger rocks into smaller minerals particles, i.e. soil formation. It occurs by following methods:
- Due to uneven heating by the sun water inside the rock causes cracking.. If this water freezes, it would cause these cracks more widen.
- Flowing water wears away very hard rocks over long periods of time. When water flows with high speed, then it washes away all types of rock particles. The rock particles are deposited at the bottom of water. These rocks rub against the other rocks and resultant abrasion causes the rock to breakdown into the smaller particles. In this way soil forms gradually.
Qs8: Write a short note on soil erosion.
Ans8:When top layer of soil is removed and transported from its original position to another place due to strong wind and fast running rain water then we term it as soil erosion.
We can prevent soil erosion by planting trees and grasses. If the soil has proper drainage channel then there is no soil erosion.
