The moon ________ sun light

Skin helps us to synthesize____usinig sun light.

The value of acceleration due to gravity on the moon is _________

At sunrise and sunset , the light rays from the sun have to travel a _________ in the atmosphere is known as ________ scattering.

The weight of an object on the Earth is ________________ times its weight on the Moon.

Which of these unit is lasrgest: AU, light year and parsec. Express the average distance of earth from the sun in (i) light year (ii) per sec.

True or False .If false , give the correct statement: The sun give uis light and heat.

Which of these protects the changes in basal cell DNA from ultraviolet wavelengths of sun light to avoid skin cancer?