Step 1: Effect of automobiles.
The introduction of automobiles gave people freedom of mobility, enabling cities to expand horizontally. This phenomenon is called urban sprawl.
\[
(A) \; \text{Correct}
\]
Step 2: Compact cities and carbon emissions.
Compact cities, with mixed land uses and higher density, actually reduce travel distances and dependence on automobiles. This leads to lower, not higher, carbon emissions.
\[
(B) \; \text{Incorrect}
\]
Step 3: Interdependence of land use and transport.
Land use decisions affect transport demand, while transport infrastructure shapes land use. They are strongly interdependent.
\[
(C) \; \text{Correct}
\]
Step 4: Effect of new transport modes.
Introducing a new transport system (like metro, BRT, etc.) significantly alters accessibility, travel choices, and urban form. Hence the statement that it does not change accessibility is wrong.
\[
(D) \; \text{Incorrect}
\]
Step 5: Conclusion.
Correct statements = (A) and (C).
Final Answer: \[ \boxed{\text{(A) and (C)}} \]
Match the various types of impurities present in water in Group I with the appropriate water treatment process given in Group II.
\[\begin{array}{|c|c|} \hline \textbf{Group I} & \textbf{Group II} \\ \hline \text{P: Fine suspended matter} & \text{1: Aeration} \\ \hline \text{Q: Pathogenic bacteria} & \text{2: Plain sedimentation} \\ \hline \text{R: Color, odour and taste} & \text{3: Sedimentation with coagulation} \\ \hline \text{S: Floating matter as leaves} & \text{4: Screening} \\ \hline & \text{5: Disinfection} \\ \hline \end{array}\]
