Answer:
B. Root is the correct answer
Answer:
To prevent or limit bacterial contamination of the collected blood
Explanation:
The first few milliliters of blood have been reported to have a high probability of bacterial contaminant from the skin. Several studies have shown that diverting the first 10 to 30 milliliters of blood from a donor into a special pouch is effective in limiting the chances of collected blood being contaminated with bacteria.
<em>Hence, the purpose of the procedure is to limit the bacterial contaminant that will enter the blood collection bag.</em>
The correct answer is: [C]:
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→ " grassland ecosystem " .
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{Since the organisms you mention:
"zebra, lion, raccoon , grass, rat, Cricket crow" occur in the "grassland ecosystems" of Africa ; according to the following "food web" (diagram).
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Hope this helps!
Best wishes to you!
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The
Blood<span> moves in the heart through two large veins, the
inferior and superior vena cava, and exhausting oxygen-poor blood from the body into the right atrium. The pulmonary vein discharges oxygen-rich blood, from the lungs into the left atrium.</span>
