Which undefined geometric term is described as a two-dimensional set of point that has no beginning or end?

The sun's parallax would be 180 degrees, greater than which you can't get.  so a. would be your anwser 

Answer volcanic outgassing;

Western europe's proximity to water has affected its climate since large bodies of water in the moderation of air temperature of the surrounding areas. the economy is also affected since it is great for the economic growth of the region. this allows easy access to trade for europe. culture is also affected by the proximity of water through the pattern of their day-to-day living.