Average salinity or ratio of salt as per kilogram of water of ocean is_____?

✅ A. 17-30

✅ D. Temperature of the place where it is kept

✅ B. Mercury

Mercury is the closest planet to the Sun. Read more

✅ A. metallic substances

✅ B. Insulin

✅ A. Brain

✅ B. The Sun lights up only one half of the Moon and as the Moon orbits the Earth we can sometimes see the unlit side of the Moon.

✅ D. Mars