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
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RE. Una suposición fundamentada de la respuesta a una pregunta
College fair? I really cant say based off the lack of context clues in the question and no additional information.
Diffusions
Osmosis
Facilitated diffusion
Active transport
