Healthy vegetation reflects energy in what parts of the electromagnetic spectrum?Green and RedGreen and Near-InfraredBlue and GreenBlue and Red

Healthy vegetation reflects energy primarily in the Green and Near-Infrared parts of the electromagnetic spectrum.

Here's the step-by-step reasoning:

1. Visible Spectrum Reflection: Healthy vegetation appears green to the human eye because it reflects more green light compared to other visible wavelengths (blue and red). This is why one of the options includes "Green".

2. Near-Infrared Reflection: Beyond the visible spectrum, healthy vegetation reflects a significant amount of energy in the Near-Infrared (NIR) region. This is a key characteristic used in remote sensing and satellite imagery to assess plant health and biomass.

3. Other Options:

   • "Green and Red": Vegetation does not reflect much red light; it absorbs red light for photosynthesis.
   • "Blue and Green": While vegetation reflects some blue light, it is not as significant as green and NIR.
   • "Blue and Red": Vegetation absorbs these wavelengths for photosynthesis, so they are not reflected significantly.

Therefore, the correct answer is "Green and Near-Infrared".