Identify examples of dependency between species

Rah is completing a school project on the expansion of fast food restaurants across the united states. she finds a map that shows a clear pattern of restaurants beginning in the east and expanding west. this map was most likely created using the technology of

What is the longest river in central asia, and which countries does it border

Select an environmental issue faced by the countries of this region ( central america, south america, and the caribbean) . write a 150-word essay describing the problems presented by each issue and possible solutions to these problems.