How war debris could cause cancer A Could the mystery over how depleted uranium might cause genetic damage be closer to being solved? It may be, if a controversial claim by two researchers is right. They say that minute quantities of the material lodged in the body may kick out energetic electrons that mimic the effect …
Volatility Kills A . Despite gun battles in the capital of Chad, rioting in Kenya, and Galloping inflation in Zimbabwe, the economies of sub-Saharan Africa are, as a whole, in better shape than they were a few years ago. The World Bank has reported recently that this part of the continent experienced a respectable growth rate of 5.6 …
The sense of flavour 2 {A} Scientists now believe that human beings acquired the sense of taste as a way to avoid being poisoned. Edible plants generally taste sweet; deadly ones, bitter. Taste is supposed to help us differentiate food that’s good for us from food that’s not. The taste buds on our tongues can detect …
The History of the Invention of Plastics {A} Natural polymers include such familiar substances as silk, rubber, and cotton. Plastics are artificial polymers. Plastics are used on a daily basis throughout the world. The word plastic is a common term that is used for many materials of a synthetic or semi-synthetic nature. The term was derived …
Crisis! freshwater A . As in New Delhi and Phoenix, policymakers worldwide wield great power over how water resources and managed. Wise use of such power will become increasingly important as the years go by because the world’s demand for freshwater is currently overtaking its ready supply in many places, and this situation shows no sign …
The beginning of intelligence A No one doubts that intelligence develops as children grow older. Yet the concept of intelligence has proved both quite difficult to define in unambiguous terms and unexpectedly controversial in some respects. Although, at one level, there seem to be almost as many definitions of intelligence as people who have tried to …
Sunny Days For Silicon A The old saw that “the devil is in the details” characterizes the kind of needling obstacles that prevent an innovative concept from becoming a working technology. It also often describes the type of problems that must be overcome to shave cost from the resulting product so that people will buy it. …
Questions 1-10 Complete the notes below. Write ONE WORD AND/OR A NUMBER for each answer. FAMILY EXCURSIONS Cruise on a lake Example • Travel on an old………steamship……… • Can take photos of the 1 that surround the lake Farm visit • Children can help feed the sheep • Visit can include a 40-minute ride on a 2 • Visitors …
Questions 1-5 Choose the correct letter, A, B or C. MANHAM PORT 1. Why did a port originally develop at Manham? A It was safe from enemy attack. B It was convenient for river transport. C It had a good position on the sea coast. 2. What caused Manham’s sudden expansion during the Industrial Revolution? A the improvement in mining …
Questions 1-4 Listen from here Answer the questions below. Write NO MORE THAN ONE WORD AND/OR A NUMBER for each answer. 1 Where was a Stone Age rubbish dump found? 2 In Medieval times, what type of waste was most common? 3 What did science link with waste? 4 Which invention is the biggest problem for the environment? ———————- Tips: Short-answer questions …
