Answer:
They lose a lot of iron thru blood loss each month. If women did not have enough iron in their diet, they can feel tired, weakness, dry skin and nails, poor concentration, can cause serious health problems, and/or your body will make fewer RBCs (red blood cells) or will produce smaller RBCs than normal.
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Answer:
spiral staircase
its a double helix, which is what DNA is
Photosynthesis takes in carbon dioxide & lets out oxygen & glucose
Answer:
I am not sure but I think option d is correct