according to data from the u s in 2008 people are consuming over 60 pounds 28 kg of added sugar per year and this does not include fruit juices 1 in 2008 the average intake was 76 7 grams per day which equals 19 teaspoons or 306 calories
Lesson Summary. Scientists had noticed that the coastlines of the continents had complementary shapes and could fit together. Alfred Wegener was the first person to propose that all the continents were once connected together in a supercontinent, known as Pangaea.
Hubble used the 100 inch Hooker Telescope on Mount Wilson, then the largest telescope in the world, to study the Andromeda Nebula, M 31. In 1923 he identified some of the stars within it as Cepheid variables. These are periodic variable stars, that is stars that vary their brightness in a regular way.