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2. ¿Es la araña mejor o peor que el mosquito? La araña es (más) peor que el mosquito. do not use (mas) La araña es peor que el mosquito. on #3, it should be "o" not "or" #4 prefieros should be Prefieres

Roman Structural revolution Concrete = cement plus an aggregate. An aggregate is a binding agent such as sand or gravel that is added to cement to form concrete. Cement Not a Roman invention Composed of lime, sand, and water Romans added a local volcanic ash called pozzolana Produced a cement of exceptional strength Roman aggregate Composed of stones, gravel, building debris, chips from stone quarries Thus: Roman cement + Roman aggregate = Roman concrete Far superior in strength to any earlier versions Advantages of concrete over natural stone No need to quarry it or transport it Could be mixed on site Could be cast into almost any shape Disadvantage of concrete compared to natural stone Not inherently weather resistant or aesthetically pleasing

Entasis: a column that curves outward in the middle of the shaft The column shaft gets narrower as it approaches the capital and the base. It is found on both smooth and fluted columns, and was a major feature of Greek architecture. Roman architecture also used entasis. Why it exists: it is an optical correction or refinement that helps a column appear straight (and therefore sturdy). Otherwise columns might appear as though they wanted to collapse inward.

Go to google and type in etsy this cite is amazing