The polar nuclei of the center cell
Answer:mercury, lead, chromium
Explanation:
Answer:
Y = Aorta.
W = inferior Vena cavae.
Z= Pulmonary vein
X = Pulmonary organ.
Explanation:
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Assuming you mean living matter
All living matter is produced by other living matter
<em><u>concentrates:</u></em><em>
concentrates are high in protein and low in fibre.....
<u>roughage :</u>
roughage is high in fibre...</em>
