संयुक्त राष्ट्र के मानकों के अनुसार, एक 'मेगासिटी' (महानगर) वह नगरीय संकुल है जिसकी कुल जनसंख्या कम से कम कितनी होती है?

Which among the following statements is/are correct about Urbanization? I. Urbanization is a process in which population moves from rural to urban areas, which can lead to an increased burden on urban infrastructure and resources. II. Employment opportunities act as a key pull factor drawing rural populations to urban areas. Which of the statements given above is/are correct?

In everyday life, higher population density in cities like Delhi leads to _____.