solve this worksheet plz
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1. Red Blood Cells....
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- Haemoglobin
- Serous fluid
- Pulmonary vein
- Tracheids and xylem vessels
- Composition of blood : plasma, red cells, white cells and platelets
- Heart, blood vessels and blood ( arteries and veins)
- Oxygenated and deoxygeneated blood do not mix up because of the presence of valves inside the heart and it is very important that they do not mix up, because it would reduce the overall efficiency of blood to carry oxygen to the tissues.
Hope it helps you
I don't know the answer for 5th one, sorry.
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