Question

E. Lets go beyond the text:
Why does the oxygen level in the atmosphere get reduced ? What could
be its consequences?
2.
How do the chemical industries cause dangerous air pollution ? What is
its far reaching consequences ?
3 How is acid rain caused ?
How does polluted air travel from one country to another?
5
What steps can be taken to reduce the pollution caused by automobiles?
Is air pollution a global problem?​

Answer 1

Answer:

One potential hypothesis is that a global increase in erosion rates has led to a steady decline in free O2 within the atmosphere. In a process similar to iron rusting (where iron binds with oxygen during oxidation) weathering rocks can remove free oxygen from the atmosphere.