Can anyone explain the bottom to me?

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species

How does science influence the decisions made about social, economic, and political issues?