Anil Ahlawat Solutions for Chapter: Natural Resources, Exercise 1: EXERCISES

Soil is complex mixture. The given figure shows the percentage by volume of different soil components as $P, Q, R$ and $S$. What will you place at $S$?

Which of the following statements is incorrect regarding nitrogen fixation?

Organisms like lichens are very sensitive to the levels of

The given figure shows a river and the types of land use on the sides of the river. The water quality of the river  was studied by measuring the amounts of dissolved oxygen and ammonia in the water collected at sites $X, Y$ and $Z$. The results are given below:

Which of the following is correct regarding this?

The given graph shows changes in concentration of two substances $X$ and $Y$ in river polluted by sewage. Which of the following options most appropriately identifies $X$ and $Y$?

The given cycle represents circulation of nitrogen in the environment. Identify $X, Y$ and $Z$ in the cycle and select the correct option.

$R$ is an organic compound containing only carbon, chlorine and flourine. It has been widely used as refrigerant, propellant and solvent. Montreal protocol out manufacture of such compounds because $R$ contributes to $S$ in the atmosphere.

Which of the following would not be a consequence of $S$?

The following table shows mercury concentration in various organisms living in the same terrestrial habitat.

Now, select the correct food chain interlinking these organisms, that will exist in the ecosystem.