Which of the following air pollutant is capable of preventing photosynthesis in plants?
(a) CFCs
(b) nitrogen oxide
(c) dust
(d) carbon monoxide
Name one source and one harmful effect of each of the following air pollutants :
(a) Sulphur dioxide
(b) Nitrogen oxides
(c) Carbon monoxide
(d) Chlorofluorocarbons (CFCs)
Which of the following air pollutant reduces the oxygen-carrying capacity of blood to a large extent?
(a) carbon dioxide
(b) nitrogen monoxide
(c) carbon monoxide
(d) sulphur dioxide
Plants take in CO2 during photosynthesis. Which of the following is given out as a byproduct of photosynthesis?