A zone of atmosphere that lies near the ground is -

Appeared in: UPPSC 2023

Explanation

The Troposphere is the lowest layer of the Earth's atmosphere, in direct contact with the surface.
It extends from ground level to an altitude of approximately 8 to 15 kilometers.
This layer contains the majority of the atmosphere's mass, water vapor, and aerosols.
Almost all weather phenomena, such as clouds, rain, and wind, occur within the Troposphere.

Option A: The Stratosphere is the second layer of the atmosphere, located directly above the Troposphere, not near the ground.
Option B: The Mesosphere is the third layer of the atmosphere, situated above the Stratosphere. It is far from the ground.
Option C: The Ionosphere is not a distinct structural layer but an ionized region within the upper atmosphere (mesosphere and thermosphere). It is not the layer near the ground.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Layers of the Earth's atmosphere as background academic context rather than a clinical decision trigger.
Understanding atmospheric layers is relevant to environmental health, a component of community health nursing.
Air pollution in the troposphere, the air we breathe, directly impacts respiratory and cardiovascular health, leading to conditions like asthma, bronchitis, and heart disease.
The depletion of the ozone layer in the stratosphere increases exposure to UV radiation, raising the risk of skin cancer and cataracts, which are important health education topics for nurses.

How to Approach the Question

First, identify the key phrase in the question: 'lies near the ground'.
This is a factual recall question that requires knowledge of basic geography or environmental science.
Recall the order of the atmospheric layers starting from the Earth's surface upwards.
The order is: Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere.
Based on this order, the layer 'near the ground' is the Troposphere.
Select the option that matches this fact.

Concept Tested & Keywords

QYvJgoondOzPRUP7an-Jl9

E6 Comprehensive Textbook of Community Health NursingShyamala D part 1 (pp 26-389 of 389) p. 109-111

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 415-417

Practise the full UPPSC 2023

Attempt every question from this paper in a timed mock, then review the full solution for each one.