Problem: Architectural classicism is heavily represented in all districts of the city, particularly in Downtown, the Fan, and the Museum District. Several notable classical architects have designed buildings in Richmond. The Virginia State Capitol was designed by Thomas Jefferson and Charles-Louis Clerisseau in 1785. It is the second-oldest US statehouse in continuous use (after Maryland's) and was the first US government building built in the neo-classical style of architecture, setting the trend for other state houses and the federal government buildings (including the White House and The Capitol) in Washington, D.C. Robert Mills designed Monumental Church on Broad Street. Adjoining it is the 1845 Egyptian Building, one of the few Egyptian Revival buildings in the United States.
Who were the designers of the Virginia State Capitol?
The answer is the following: Thomas Jefferson and Charles-Louis Clerisseau

Problem: Paleobotanists study ancient plants in the fossil record to provide information about the evolutionary history of plants. Cyanobacteria, the first oxygen-releasing photosynthetic organisms on Earth, are thought to have given rise to the ancestor of plants by entering into an endosymbiotic relationship with an early eukaryote, ultimately becoming the chloroplasts in plant cells. The new photosynthetic plants (along with their algal relatives) accelerated the rise in atmospheric oxygen started by the cyanobacteria, changing the ancient oxygen-free, reducing, atmosphere to one in which free oxygen has been abundant for more than 2 billion years.
What can scientists learn from the fossil record?
The answer is the following: evolutionary history of plants

Problem: The macronutrients are carbohydrates, fats, protein, and water. The macronutrients (excluding fiber and water) provide structural material (amino acids from which proteins are built, and lipids from which cell membranes and some signaling molecules are built) and energy. Some of the structural material can be used to generate energy internally, and in either case it is measured in Joules or kilocalories (often called "Calories" and written with a capital C to distinguish them from little 'c' calories). Carbohydrates and proteins provide 17 kJ approximately (4 kcal) of energy per gram, while fats provide 37 kJ (9 kcal) per gram, though the net energy from either depends on such factors as absorption and digestive effort, which vary substantially from instance to instance. Vitamins, minerals, fiber, and water do not provide energy, but are required for other reasons.
What other significant aspect do macronutrients provide other than energy?
The answer is the following: structural material

Problem: In 2005, in order to host The 10th National Game of People's Republic of China, there was a new stadium, Nanjing Olympic Sports Center, constructed in Nanjing. Compared to Wutaishan Sports Center, which the major stadium's capacity is 18,500, Nanjing Olympic Sports Center has a more advanced stadium which is big enough to seat 60,000 spectators. Its gymnasium has capacity of 13,000, and natatorium of capacity 3,000.
How many people can Nanjing Olympic Sports Center's natatorium hold?
The answer is the following:
3,000