What percent of solar energy is absorbed by terrestrial ecosystem?

1%

The correct answer is Option (4)- 1%

Terrestrial ecosystems absorb around 1% of the sun's energy. This energy is captured by plants during photosynthesis, which they use to produce food (sugars) and fuel their growth. The remaining solar energy is reflected back out to space, heats the planet, or is used in other ecological processes.

• Solar energy is the primary source of energy for life on Earth.
• When sunlight reaches the Earth's atmosphere, a portion of it is reflected back into space, and some is absorbed by the atmosphere. Only a small fraction reaches the Earth's surface. This small fraction of absorbed solar energy is crucial for driving photosynthetic processes, which form the basis of the food chain and support life on Earth.

The efficiency of solar energy absorption is relatively low due to factors such as reflection, scattering, and absorption by the atmosphere, but it plays a vital role in sustaining life processes on our planet.