# Science:Math Exam Resources/Courses/MATH221/December 2007/Question 09 (a)

MATH221 December 2007

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### Question 09 (a)

On a remote planet, moisture is present in clouds, on the continents, and in the seas.

• Each year 80% of the cloud moisture falls onto the land and 10% falls into the seas.
• Each year 15% of the land moisture evaporates directly into the clouds and 65% runs into the seas.
• Each year 70% of the sea moisture evaporates into the clouds.

Assume we know also that the total amount of water or moisture on the planet is 86 trillion litres.

Draw a diagram of the moisture transfer on this planet.

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