Sigma Sagittarii is the second brightest star in the constellation Sagittarius. It is a hydrogen fusing dwarf star that belongs to the spectral type B2.5 V. It has an apparent visual magnitude of 2.1. The star has a luminosity 3,300 times that of the Sun and about seven solar masses.
Urban sprawl is endangering wildlife all over america and it needs to stop. The second major negative effect from urban sprawl is increased air pollution. With sprawl comes longer and more frequent car rides into the city. This is a major concern because of the amount of pollution produced by so many people driving so far, so frequently.
The way urban sprawl is measured is determined by how it is defined. Similarly, the methods used to measure urban sprawl are determined by spatial data. Arguably, knowledge of the urban sprawlâs consequences depends on the manner in which urban sprawl is defined in concept, method of measurement, and data.