As a passenger balloon rises, its gas bag tends to?

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Expand. External air pressure declines as altitude increases.

2006-08-28 15:39:28 · answer #1 · answered by Hums2oldies 3 · 0⤊ 0⤋

Compress.

Kris

2006-08-28 15:57:19 · answer #2 · answered by Novice 1 · 0⤊ 1⤋

Would you care to finish your question?

2006-08-28 15:36:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋

compress?

2006-08-28 15:39:28 · answer #4 · answered by Anonymous · 0⤊ 1⤋