Consider the following statements (A), (B) and (C) and choose the correct option. A. The gravitational force of earth holds the atmosphere around it B. Atmosphere only consists of few gases. C. Biosphere is a narrow zone of the earth where only land and air interact with each other.

Consider the following statements (A), (B) and (C) and choose the correct option. A. The gravitational force of earth holds the atmosphere around it B. Atmosphere only consists of few gases. C. Biosphere is a narrow zone of the earth where only land and air interact with each other. Correct Answer <span style="">Only (A) is true.</span>

among the given statements, only (A) is true.

Key Points

  • Water, air, land and all living things make up the four domains of the earth.
  • A domain is a region that has its own special features.
  • The four domains of the earth are explained below:
    1. Lithosphere:
      • The solid portion of the earth is called the Lithosphere.
      • It comprises the rocks of the earth’s crust and the thin layers of soil that contain nutrient elements which sustain organisms.
    2. Hydrosphere:
      • Water covers a very big area of the earth’s surface and this area is called the Hydrosphere.
      • The Hydrosphere comprises water in all its forms, that is, ice, water and water vapour.
    3. Atmosphere:
      • The atmosphere is the thin layer of air that surrounds the earth.
      • The gravitational force of the earth holds the atmosphere around it.
      • It protects us from the harmful rays and scorching heat of the sun.
      • It consists of a number of gases, dust and water vapour.
    4. Biosphere:
      • Plant and animal kingdom together make biosphere or the living world.
      • It is a narrow zone of the earth where land, water and air interact with each other to support life.

Based on the above discussion, we can conclude that the following statement is correct:

A. The gravitational force of earth holds the atmosphere around it

Related Questions

In the question given below,three paragraphs are given, which arejumbled. Find the correct sequence ofthese paragraphs so that they form ameaningful passage.
A. Climate change is warming the ocean,but its warming land faster and thatsreally bad news for air quality all overthe world, says a new University ofCalifornia, Riverside study. The study,published February 4 in Nature ClimateChange, shows that the contrast inwarming between the continents andsea, called the land-sea warmingcontrast, drives an increasedconcentration of aerosols in theatmosphere that cause airpollution. Aerosols affect the climatesystem, including disturbances to thewater cycle, as well as human health.They also cause smog and other kinds ofair pollution that can lead to healthproblems for people, animals, andplants.
B. To determine this, the researchersran simulations of climate change undertwo scenarios. The first assumed abusiness-as-usual warming model, inwhich warming proceeds at a constant,upward rate. The second model probeda scenario in which the land warmed lessthan expected. In the business-as-usualscenario, enhanced land warmingincreased continental aridity and,subsequently, the concentration ofaerosols that leads to more air pollution.
C. A robust response to an increase ingreenhouse gases is that the land isgoing to warm faster than the ocean.This enhanced land warming is alsoassociated with increased continental
aridity. The increase in aridity leads todecreased low cloud cover and less rain,which is the main way that aerosols areremoved from the atmosphere.