What environmental issue involves the excessive use of fertilizers and run-off chemimls into bodies of water. causing oxygen depletion and harm to aquatic ecosystems?

What term is used to describe outsourcing business processes to companies in Bangladesh, which has become a key driver of the country's economic growth?

What is the term for a network of interconnected devices and objects that communicate and exchange data can
over the internet? 

Who served as the Prime Minister of Bangladesh from 12 Jam, 1972 to 25 January 1975?

What term describes integrating digital information with the user's environment. in real time, enhancing their Perception of the physical world?