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What Causes Global Warming? Answer: Scientists have determined that a number of human activities are contributing to global warming by adding excessive amounts of greenhouse gases to the atmosphere. Greenhouse gases such as carbon dioxide accummulate in the atmosphere and trap heat that normally would exit into outer space. Increasing global temperature is expected to cause sea level to raise , an increase in the intensity of extreme weather events, and significant changes to the amount and pattern of precipitation . Other expected effects of global warming include changes in agricultural yields , modifications of trade routes, glacier retreat , species extinctions and increases in the ranges of disease vectors .

Alek Wek Considered one of the 'sexiest 16 Black women alive', Alek Wek is a Sudanese supermodel who has appeared on catwalks since the age of 18. Renowned for her hair and her beautiful legs, she has had a fascinating journey from an impoverished background to the glamorous world of modeling.

English Edification Enrichment- What is the meaning of "chock-a-block"? This is an expression, which is mainly used in informal contexts. Chock-a-block means, "completely full; tightly packed". The expression is usually followed by "with". The main stress is on "block". The first word "chock" is pronounced like the first syllable of "chocolate". Here are a few examples. * The cupboard was chock-a-block with hundred rupee notes. * I wouldn't go there now. The place will be chock-a-block with tourists. * On Friday evening, Ashok's house was chock-a-block with guests.