Chapter-14 Natural Resources NCERT Exampler

1. Why is the atmosphere essential for life?

Explanation:

  • The major gases that make up the atmosphere, such as O2, N2, and CO2, are what allow microbes, plants, and creatures to survive.

  • The earth's climate is responsible for photosynthesis.

  • The earth's atmosphere is a result of the planet's consistent climate.

  • The atmosphere is responsible for actions like breathing, fire, and combustion.

  • The atmosphere primarily prevents UV radiation from reaching the planet.


2.  Why is water essential for life?

Explanation:

  • Water is necessary for all cellular processes, including breathing, digestion, and other biochemical responses.

  • More than 70% of what makes up living things is water.

  • The existence of water allows for the transportation of substances from one shape to another.


3. How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?

Explanation:

Soil is necessary for the survival of every living thing on earth, whether directly or tangentially. Plants make their food while also obtaining water and minerals from the earth. Because the main producers are the microbes that are growing on the soil in the water, other living creatures that exist in water are not entirely autonomous of soil. The first link in the food cycle is the primary provider. Different soil-found microorganisms aid in the breakdown of deceased aquatic plants and animals, which serves to replenish the water's nutrients and elements.


4.  You have seen weather reports on television and in newspapers. How do you think we are able to predict the weather?

Explanation:

 Weather is examined as a composite of different elements, including high and low temps, humidity, precipitation, wind speed, and more, using various data and tools. So, using the information gathered by the meteorologists, we are able to predict the weather.  People who work for the weather service and meteorologists across the nation create a daily weather prediction. It is now feasible to accurately anticipate weather changes thanks to modern computers. The presence of weather sensors allows for the taking of photos of clouds from space. The maximum-minimum thermometer is a gauge used to determine the low and high temperatures for a given day. The assessment of rainwater uses a rain gauge. Anemometers are used to detect wind speed.


5. We know that many human activities lead to increasing levels of pollution of the air, water-bodies and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?

Explanation:

The primary cause of atmospheric pollution is human activity. Pollutants are distributed through the air into different sources, including land and water. Therefore, we can conclude that restricting activities in certain areas will undoubtedly contribute to the somewhat effective management of air pollution. Restricting human activity to particular regions would aid in lowering smog levels. For instance, 1. If all industrial or sewage refuse from various locations is gathered and processed in one location before being discharged or dumped, we can somewhat reduce the pollution of the water and land.


6.  Write a note on how forests influence the quality of our air, soil and water resources.

Explanation:

  • Air:

Forests remove various contaminants from the air by soaking them.

By consuming carbon dioxide during photosynthesis, forests contribute to raising the oxygen concentration in the atmosphere.

Transpiration aids in cloud creation and the maintenance of the environment's climate.

  • Soil:

Forest plants conserve soil, avoiding soil runoff.

Increases soil nutrition as a large amount of the forest's flora decomposes.

  • Water:

The presence of forests aids in the production of rain and raises the amount of water present beneath.