In atmosphere density of water vapour varies. To what per cent does it vary?
A. 0 – 4%
B. 5-10%
C. 7-12%
D. 9-15%.
Answer:A
In atmosphere density of water vapour varies. To what per cent does it vary?
A. 0 – 4% B. 5-10% C. 7-12% D. 9-15%.