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==='''Chemical reaction video magic'''===
−{{#widget:YouTube|id=gOqdp9T-gXo|height=300|width=450}}
−===Which animal blood is blue in colour? ===
−Horseshoe crab blood is bright blue because of copper-based hemocyanin to transport oxygen where vertebrates use iron in hemoglobin.
−{{#widget:YouTube|id=e8KlAmtIu1E|height=300|width=450}}
This is a beautiful website that shows the dimensions of all matter in the universe - smallest to largest. To explore please click [https://neal.fun/size-of-space/ here].
This is a beautiful website that shows the dimensions of all matter in the universe - smallest to largest. To explore please click [https://neal.fun/size-of-space/ here].
−}}
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