Causes of conjunctivitis. Causes of conjunctivitis include: Bacterial or viral infection. Infection with a virus that may also cause a fever and sore throat. Sexually transmitted infections (STIs), including chlamydia and gonorrhoea. Irritants such as chlorine from swimming pools, shampoo, smoke, fumes or a loose eyelash.
India is on track to become the worldâs most populous nation in less than a decade â or six years earlier than previously thought, according to the U.N. With 1.38 billion people compared with Indiaâs 1.31 billion, China is currently the worldâs most populous country. Figures for both countries are expected to swell to around 1.4 billion by 2022, at which point Indiaâs population is likely to expand beyond Chinaâs.
China is the world's most populous country with more than 1.3 billion peopleâ20 percent of the Earth's population. Occupying most of East Asia, it is the fourth largest country in area (after Russia, Canada, and the U.S.).China's geography is highly diverse, with hills, plains, and river deltas in the east and deserts, high plateaus, and mountains in the west.hina's geography causes an uneven population distribution; 94 percent live in the eastern third of the country. Shandong province, with its mild coastal climate, has more than 90 million people, but Tibet, with its harsh mountain plateau climate, has less than 3 million.