Questions

No.Minimal spanning tree assures that the total weight of the tree is kept at its minimum. But it doesn’t mean that the distance between any two nodes involved in the minimum-spanning tree is minimum.

"Pressure" is the ratio of mass to area. So, for any given area, the one with more mass pressing on it will experience a higher pressure.

As you go more deeply into the atmosphere OR earth itself, you are putting more and more mass over you. For the same unit area therefore, the pressure, (mass/area) increases.

Hence, the lowest layer will always have the highest pressure i.e, inner core.

BELL Laboratories trademark is the operating system unix.

Peru is a country in South America. Lima is the capital city of Peru. Sol is the currency of Peru.

The required 7 letters word is SNOWING.

It becomes -

Sowing,

Swing,

Sing,

Sin,

In, and

I

when each letter is removed from it at a time.

Byzantium / Cons-tantinople/ Istanbul

Sir Francis Drake was the first Englishman to sail around the world.