Question

lesson 15 - water cycle
how old is most of the water we drink today?
(1 point)
○ a few months
○ a few weeks
○ millions of years
○ thousands of years

Explanation:

The water cycle is a continuous process, and most of the water on Earth (including the water we drink) has been part of the cycle for millions of years. The water we use today is the same water that has existed since the Earth's early days, cycling through evaporation, condensation, precipitation, etc., over extremely long time periods. So the correct option is the one stating "millions of years".

Answer:

C. millions of years (assuming the options are labeled A, B, C, D with A: a few months, B: a few weeks, C: millions of years, D: thousands of years)