Can you help me with this science question:

Question

from sea level, the biosphere goes up about 9km and down about 19km. What is the thickness of the biosphere in meters?

(there wasn't a formula in the workbook).

Thanks

Answer 1

1 km = 1,000 meters

9 km = 9,000 m
19 km = 19,000 m

Answer 2

oh! I see. I thought i needed a formula. 9000m + 19000m = 28000m Thanks!

Answer 3

Right. You're welcome.

Answer 4

10,000

Answer 5

Help me i dont know the anwser

Answer 6

analyzing relationships what would happen to the other organisms in the salt-marsh ecosystem if the cordgrass suddenlydied?

Answer 7

1,000
9,000
19,000
+--------
29,000 Meters

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Answer 8

I need the answer

Answer 9

.19 is the answer

Answer 10

What is the answer to(how many meters is the Biosphere )(thickness).

Answer 11

Plus I’m in 5gd.

Answer 12

Bro who no the answer