question_answer

                                                      

Fill in the blanks:

(a) ____ released in the atmosphere creates greenhouse effect.

(b) Third layer of atmosphere is ____.

(c) ____ protects us from the harmful effect of sun rays.

(d) ____ is the most plentiful gas in the air.

(e) ____ is used to measure atmospheric pressure.

Answer:

(a) Carbon dioxide

(b) Mesosphere

(c) Ozone layer

(d) Nitrogen

(e) Barometer