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6.Evolution
medium
How old is our universe?
A
$10$ billion year old
B
$20$ billion year old
C
$15$ billion year old
D
$5$ billion year old
Solution
The universe is vast relatively speaking the earth. Itself is almost only a speck. The universe is very old almost $20$ billion years old. Huge dusters of galaxies comprises the universe
Standard 12
Biology