Context and question: Mexico city primarily rests on what was Lake Texcoco. Seismic activity is frequent here. Lake Texcoco was drained starting from the 17th century. Although none of the lake waters remain, the city rests on the lake bed's heavily saturated clay. This soft base is collapsing due to the over-extraction of groundwater, called groundwater-related subsidence. Since the beginning of the 20th century the city has sunk as much as nine metres (30 feet) in some areas. This sinking is causing problems with runoff and wastewater management, leading to flooding problems, especially during the rainy season. The entire lake bed is now paved over and most of the city's remaining forested areas lie in the southern boroughs of Milpa Alta, Tlalpan and Xochimilco.
What does Mexico City rest on?
Answer: Lake Texcoco
Context and question: Many of these species have adaptations to help in under-water locomotion. Water beetles and water bugs have legs adapted into paddle-like structures. Dragonfly naiads use jet propulsion, forcibly expelling water out of their rectal chamber. Some species like the water striders are capable of walking on the surface of water. They can do this because their claws are not at the tips of the legs as in most insects, but recessed in a special groove further up the leg; this prevents the claws from piercing the water's surface film. Other insects such as the Rove beetle Stenus are known to emit pygidial gland secretions that reduce surface tension making it possible for them to move on the surface of water by Marangoni propulsion (also known by the German term Entspannungsschwimmen).
Dragonflys use what kind of propulsion?
Answer: jet
Context and question: Some sections of the state feature architectural styles including Spanish revival, Florida vernacular, and Mediterranean Revival Style. It has the largest collection of Art Deco and Streamline Moderne buildings in both the United States and the entire world, most of which are located in the Miami metropolitan area, especially Miami Beach's Art Deco District, constructed as the city was becoming a resort destination. A unique architectural design found only in Florida is the post-World War II Miami Modern, which can be seen in areas such as Miami's MiMo Historic District.
What architectural styles are in Florida
Answer:
architectural styles including Spanish revival, Florida vernacular, and Mediterranean Revival Style