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The total amount of water on Earth?
a.
is increasing.
b.
is fairly constant.
c.
is decreasing.
d.
depends on the weather
4 Answers
- Anonymous7 years ago
They want you to answer "b".
The total amount of water on Earth, will be a function of its magnetic field strength, and its surface temperature. Its temperature is warming, and its field strength is weakening, Earth is net losing hydrogen to space. But it is *very* slow.
In about 200 years the poles will reverse, and be near zero field strength, and after that the field strength will increase again and we will net gain hydrogen from the solar wind. From which water will be formed.
- PhotofoxLv 77 years ago
I'm sure this would have been covered in the lesson. That's why it's been given as homework.
- Anonymous7 years ago
b
- 7 years ago
Is constant unless water vapour escapes the earth's gravitational pull. The temperature is not nearly hot enough for this to happen ....... yet!
