Writing and Reading

      [1] Cyanobacteria inhabit water in every corner of the world. [2] These microorganisms possess the qualities of algae and bacteria, and under certain environmental condition, cyanobacteria multiply rapidly, creating harmful algal blooms. [3] During blooms, cyanobacteria produce toxins, such as microcystins, in amounts that can harm wildlife, pets, and humans. [4] To combat such threats, a fleet of satellites orbiting 700 kilometers above the Earth scans lakes in the continental United States, searching for the characteristic blue-green swirls of cyanobacteria. [5] At the national level, these officials look for ways to protect drinking and recreational waterbodies. [6] At the local level, bloom prevention can include diverting runoff or planting rows of vegetation in areas of high runoff to slow and absorb nutrients. [7] The information they provide can make decisions easier for water managers by prioritizing at-risk bodies of water. 

To make the paragraph most logical, sentence 7 should be placed