Which of the following will upset the cycle by adding too much of carbon dioxide?
(a) Large scale felling of trees
(b) Increase in human population
(c) Overgrowth of fungi
(d) Over-use of fossil fuels
115. A picture showing the nitrogen cycle is given.
Which is the direct source of nitrogen to the atmosphere?
(a) Dead animals
(c) Nitrate absorbing bacteria
(d) Green plants
For details answers for solved MCQs in Geography visit – doorsteptutor.com