Rivers exchange water, materials, energy, and nutrients, in a reciprocal manner with the surrounding environment. River water quality, sediment characteristics, and biological communities, all reflect characteristics of the upstream, and even the downstream environment.aintaining position in the face of flow can be energetically costly, but provides access to a conveyer belt-like food-delivery system. Stream and river organisms reflect their localized niche, and surrounding landscape both upstream and downstream.
In a merger announced on March 5, 2006, and executed on December 29, 2006, AT&T Inc. (originally SBC Communications) acquired BellSouth for approximately $86 billion (1.325 shares of AT&T for each share of BellSouth).
Sprint to fight AT&T-T-Mobile merger. Sprint, the No. 3 wireless provider in the U.S., says the merger would undo nearly three decades of work by the U.S. government to modernize the telecom sector and open markets to competition.T&T to acquire T-Mobile USA for $39 billion. T-Mobile's 33 million subscribers will give AT&T the dominant position in the mobile market and leave the U.S. with only one GSM carrier. (Posted in Wireless by Steven Musil).