How was World War II unique from any other war in American or world history?

it was the most destructive conflict in history it cost more money damage more property killed more people and cause more far-reaching changes than any other war in history it is estimated that 1.5 million children done during the Holocaust

Given:

Initial weight of kitten = 110g

Present weight of kitten = 550g

To find:

The percentage increase in its mass.

Solution:

To get the percentage increase in its mass, we need to find the percentage increase in its weight.

Therefore, the percentage increase in kitten's mass is 400%.