the colosseum in rome consists of two back-to-back and a combination of columns that produce a sense of lightness proceeding from bottom to top tier.

The answers are 1. Amphitheaters and 2. Doric, Ionic and Corinthian combinations of columns. Amphitheaters are open air venues, which are used for entertainment, different and various performances and also sports events. The term amphitheater comes from a Greek word which means “a place for viewing”. Column designs are separated into three categories, the first is Doric, which is the most common and then second comes the Ionic and last but not the least, the most favored and extravagant type of column, the Corinthian Column. The Roman Colosseum is made up of two open-aired venues or also known as amphitheaters and a lot of different and diverse columns.

dna is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

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