In which layer of Earth's atmosphere does most weather occur? (a) Troposphere, (b) Stratosphere, (c) Mesosphere, (d) Thermosphere, (e) Lithosphere.

Step 1: Define the Problem

Identify which layer of Earth's atmosphere is responsible for most weather phenomena.

Step 2: Break Down the Problem

List the layers of Earth's atmosphere and their characteristics:

• Troposphere
• Stratosphere
• Mesosphere
• Thermosphere
• Lithosphere (Note: Lithosphere is not a layer of the atmosphere)

Step 3: Apply Relevant Concepts

• The troposphere is the lowest layer of Earth's atmosphere and is where most weather events, such as rain, snow, and storms, occur.
• The stratosphere is above the troposphere and contains the ozone layer but does not have significant weather activity.
• The mesosphere and thermosphere are higher layers with minimal weather-related phenomena.

Step 4: Analysis, Verify and Summarize

• Verify that the troposphere is indeed the layer where weather occurs due to its proximity to Earth's surface and the presence of water vapor and clouds.

Final Answer

(a) Troposphere