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.
✓ Correct answer: d) 1, 2 and 3
ExplanationFor assessing chlorophyll content from remote sensing data utilising a multispectral imaging system, the Normalized Area Vegetation Index (NAVI) has been developed.The most widely used instruments are radiometers and photometers, which can collect radiation that is emitted and reflected at a variety of frequencies.Additionally, they can be used to identify the emission spectra of different substances, providing information on atmospheric chemical concentrations.Statement 1 is correct: Satellite remote sensing such as hyperspectral imaging can estimate chlorophyll levels in vegetation by analyzing specific spectral wavelengths.This technique is widely used to evaluate plant health and productivity over large regions without requiring direct sampling.Statement 2 is correct: Advanced remote sensing tools, including drones with multispectral sensors, help monitor methane emissions from rice paddies.By integrating environmental data with computational models, these methods provide a non-invasive way to assess emissions across agricultural landscapes.Statement 3 is correct: Remote s
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