There is light on earth because of the sun. Is that the answer you were looking for?
The sun
The earth does reflect light, but does not produce light.
The Earth does not emit light, it like the moon reflects light
The Earth does not emit light, it like the moon reflects light
The earth does not emit light, but it does reflect light from the sun.
Most of the earth's light comes from the sun.
The moon and earth get there light from the sun when the sun shines onto the moon the moon reflects the suns light onto the earth.
Earth reflects light from the sun, it doesn't give out light as a star would.
If you mean light from the Sun, then it takes eight minutes for the light to reach the Earth.
Venus is about 2.32 light minutes from Earth, Jupiter is about 35 light minutes from Earth.
Clouds are light and fluffy. Earth? Not so much.
Sun makes light, earth reflects light.
it is 70% so that is the answer of how much light on the earth surface