As of 2009, there are 890 World Heritage Sites that are located in 148 countries (map). 689 of these sites are cultural and include places like the Sydney Opera House in Australia and the Historic Center of Vienna in Austria. 176 are natural and feature such locations as the U.S.’s Yellowstone and Grand Canyon National Parks. 25 of the World Heritage Sites are considered mixed i.e. natural and cultural Peru’s Machu Picchu is one of these. Italy has the highest number of World Heritage Sites with 44. India has 36 (28 cultural, 7 natural and 1 mixed) World Heritage Sites. The World Heritage Committee has divided the world’s countries into five geographic zones which include (1) Africa, (2) Arab States, (3) Asia Pacific (including Australia and Oceania), (4) Europe and North America and (5) Latin America and the Caribbean.
WORLD HERITAGE SITES IN DANGER
Like many natural, historic and cultural sites around the world, many World Heritage Sites are in danger of being destroyed or lost due to war, poaching, natural disasters like earthquakes, uncontrolled urbanization, heavy tourist traffic and environmental factors like air pollution and acid rain.
Two soils of permeabilities \( k_1 \) and \( k_2 \) are placed in a horizontal flow apparatus, as shown in the figure. For Soil 1, \( L_1 = 50 \, {cm} \), and \( k_1 = 0.055 \, {cm/s} \); for Soil 2, \( L_2 = 30 \, {cm} \), and \( k_2 = 0.035 \, {cm/s} \). The cross-sectional area of the horizontal pipe is 100 cm², and the head difference (\( \Delta h \)) is 150 cm. The discharge (in cm³/s) through the soils is ........ (rounded off to 2 decimal places).
The most suitable test for measuring the permeability of clayey soils in the laboratory is ___________.
Consider the beam ACDEB given in the figure. Which of the following statements is/are correct:
The figures, I, II, and III are parts of a sequence. Which one of the following options comes next in the sequence as IV?