Answer:
D
Explanation:
A) it is mentioned that 1 cup of water was added to each column which shows that the amount of water added to eahc column was constant, or the same
B) it is mentioned that the cylinder contained equal volumes of different sized particles, which means volume fo particles is constant as there are equal volumes
C) It is also reasonable to assume that the columns are identical as its not mentioned that they weren't, thus makking this variable constant
D) It is mentioned that small particles of marble and large particles of granite were used, this is the independent variable or the variable we change to look at the different reactions, since there re 2 different substances(marble and granite) being used the type of substance is NOT constant
Whilst performing a blood culture test, the vacutainer system entails drawing without delay into the bottles.
The BD Vacutainer® Blood series device is a closed evacuated. gadget, which consists of a sterile double-ended needle with protection. valve, BD Vacutainer® One-Use holder, and a sterile BD Vacutainer® Evacuated Blood series Tube with a predetermined draw. the majority of BD Vacutainer® Blood collection.
A Vacuum blood series tube is a sterile glass or plastic test tube with a colored rubber stopper developing a vacuum seal interior of the tube, facilitating the drawing of a predetermined extent of liquid.
The vacuum enabled the tube to fill with the proper quantity of blood. the primary evacuated tube invented by using Joseph Kleiner turned into referred to as Evacutainer. BD hired Kleiner as a consultant for the product and modified the name of his tube to Vacutainer®.
Learn more about vacutainer system here: brainly.com/question/8173690
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<span>The MAC-level data sent out by the access point is encrypted to make sure that it is not tampered with by anyone other than the intended user. In addition, a message integrity code is sent along with this data as a second level of security. This makes sure that the identifiable data in the transmission is not stolen and used for unintended purposes.</span>
B by using font colors that coordinate with each other
