All of the options are major environmental issues faced by India.

Delhi has the worst air quality in India, due to a combination of factors including vehicle emissions, industrial pollution, and construction dust.

Water pollution in India is caused by a combination of industrial waste, agricultural runoff, and sewage discharge.

Deforestation can lead to soil erosion, loss of biodiversity, climate change, and droughts, but it does not directly cause flooding.

Soil erosion in India is caused by a combination of deforestation, overgrazing, and mining.

All of the options are major climate change issues faced by India.

Rising sea levels in India are caused by a combination of melting glaciers and thermal expansion of ocean water.

All of the options are consequences of more frequent and severe heat waves in India.

Increased flooding in India is caused by a combination of climate change and deforestation.

All of the options are consequences of changes in agricultural yields in India.

Environmental issues in India are caused by a combination of rapid population growth, industrialization, and deforestation.

All of the options are major environmental challenges facing India.

Air pollution in India is caused by a combination of vehicle emissions, industrial emissions, and construction dust.

All of the options are consequences of water pollution in India.

Deforestation in India is caused by a combination of agriculture, logging, and mining.