Where is the saltiest lake in the world?

It in­creas­es UV ra­di­a­tion. In the ozone layer, ozone mol­e­cules absorb UV-B and UV-C ra­di­a­tion - short wave­length forms of ul­tra­vi­o­let that can disrupt organic molecules, pro­duc­ing can­cer­ous changes in living cells.

In January. Earth's per­i­he­lion occurs around January 3, and the aphelion around July 4. The distance change is about 3.5%, which gives 6.9% increase in solar energy reaching the Earth at per­i­he­lion relative to aphe­lion. Since the southern hemi­sphere is tilted toward the per­i­he­lion, the southern hemi­sphere receives more energy from the Sun than does the northern over the course of a year.

By approx 6 meters. For each circle, the length of the cir­cum­fer­ence is c=2πr. Hence, if a radius grows by 1 meter, the cir­cum­fer­ence grows by 2 π meters - no matter what the initial value of radius was.

Nor­we­gian Army mascot. Brigadier Sir Nils Olav is a king penguin who resides in Ed­in­burgh Zoo, Scot­land. He is the mascot and Colonel-in-Chief of the Nor­we­gian King's Guard. The name 'Nils Olav' and as­so­ci­at­ed ranks have been passed down through three king penguins since 1972 – the current holder is Nils Olav III.