Answer:
It allows rapid conduction of water from one vessel element to the next.
Explanation:
Vessels are one of the two types of conducting cells of xylem. Vessels are made of vessel elements. Vessel elements are the individual cells with perforation plates. The perforation plates have large holes (perforations). Perforation plates of adjacent vessel elements allow easier conduction of water from one vessel element to the next.
The perforated end walls of vessel elements allow these conducting cells to conduct water more readily than tracheids. Stacking of vessel elements with perforated end walls make the vessel like a water pipe through which water is being readily conducted.
No need for evacuation but continue groundwater monitoring due to lower dose of toxic substance.
No need for evacuation, continue groundwater monitoring because the dose of toxic substance in a normal or safe range. In this range the toxic substance can't affect the health of people who drink that water.
If the dose of toxic substance increases more than 10 mg/ kg then the toxic substance killed people who drink that water. According to the graph, we can see that the dose is in a normal range so we can conclude that no need of evacuation for the people.
Learn more: brainly.com/question/24926735
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