UPSC Prelims GS - 2019

Question 92
DIFFICULTCorrect: +2Incorrect: -2

For the measurement/estimation of which of the following are satellite images/remote sensing data used?
1. Chlorophyll content in the vegetation of a specific location
2. Greenhouse gas emissions from rice paddies of a specific location
3. Land surface temperatures of a specific location
Select the correct answer using the code given below.

    a
    1 only
    b
    2 and 3 only
    c
    3 only
    d
    1, 2 and 3