Question
Fill up the blanks:
- The ozone layer shields the earth from ____ radiation.
- Ozone hole first detected over the ____.
- Nitrogen is not a ____ gas.
- ____ is a branch of physical science.
Answer
- The ozone layer shields the earth from harmful ultraviolet (UV) radiation.
- Ozone holes were first detected over the Antarctic.
- Nitrogen is not a greenhouse gas.
- Physics is a branch of physical science.