Based on its role as outlined in the us constitution which function is most commonly carried out by the house of representatives

The purpose most usually conducted by the House of Representatives is to formulate legislation. The Congress is designed by the two houses, and while they may have any disagreements, their duties are essentially authoritative, so they have to designed and introduced the ultimate rules of the united states and presented them in series to recommend those. 

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

i do not know? i think i have seen this before though h?