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Earth’s Atmosphere

Consider the following statements about the atmosphere of Earth:

  1. Ionosphere influences radio propagation to distant places on the Earth.
  2. Ionosphere coincides with the thermosphere.
  3. Heat transfer by convection is limited only to stratosphere.

Choose the correct answer from the code given below:

A
1 and 2 only
B
2 and 3 only
C
1, 2 and 3
D
1 only