Question

The amount of water on earth today compared with the amount of water on earth at the time it was formed about 5 billion years ago is :

• A. The same amount
• B. About 80 per cent of the original amount
• C. About 50 per cent of what is was originally
• D. Cant say

Answer 1

Answer: (C)

About 50 per cent of what is was originally

The amount of water on earth today compared with the amount of water on earth at the time it was formed about $5$ billion years ago is about $50$ per cent of what it was originally.