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.
Some positive impacts of mining are that it brings employment to  the area and community development projects. Negative impacts  include changing the social dynamics of the â¦ community, impacting  health and livelihoods, and preventing access to clean land and  water. 11 people found this useful.f the mining sites are near bodies of water chemicals can also poison the water and the fish, it can also destroy â¦ beautiful coral reefs. Fertile land can also be affected, land can become very hard and dry because of the chemicals as well. Boiling toxic waste can cause burns on people living near the mining sites.