Answer:
The farther I moved down the taxonomy levels it becomes harder because at the top the classifications in the domain or kingdom are very broad. The farther you move down the more specific and detailed the classifications get. Also, there are many different groupings from the family classification to the subspecies classification which makes it harder for one to classify because of the about of precision you need to classify and put an organism into which ever group it goes into.
Explanation:
This could be one of two things, I need a bit more information, but perhaps you can decide.
Drip irrigation otherwise called trickle irrigation delivers water using tubes and emitters to the base of the plant. Subsurface irrigation uses a combination of tubes and emitters and is buried under ground. Good luck
The correct answer for the question that is being presented above is this one: "B. building of the transcontinental railroad --> disappearance of the frontier." The pair of events that did the first event most directly influence the second is the building of the transcontinental railroad --> disappearance of the frontier.
