Sand should be your answer because it contains 5,0 premeability variation
The methylene blue reduction test is a test commonly used to estimate the microbial load of a milk sample and as a result, examine the quality of the milk.
The principle of this test is that methylene blue is a dye which loses its colour in the absence of oxygen. Bacterial metabolism can cause the depletion of oxygen in the milk, therefore the methylene's reduction rate is connected to the presence of microorganisms in the milk.
As a consequence, if the tubes were not sealed tightly, then oxygen will enter the tube and the dye's colour will diminish, giving a false result concerning the presence of microorganisms in the sample.
A.) Since oil mining requires a lot of clean water to mine coal and natural gas
Answer:
Explanation:
xylem vessels transport water and nutrient from roots to the other parts of the plant
trachieds are elongated in the xylem of vascular plant that play role in the transport of water and mineral salt
seive tube are the elongated living cells of the phloem in the flowering plant they are the conduits of food (mostly sugar) transport
